Reaching The Age of Adolescence Class 8 MCQ Online Test

Question 1

Question 1: What is the period of life marked by significant physical changes leading to reproductive maturity called?

A. ChildhoodB. AdolescenceC. AdulthoodD. Old age

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Answer

B. Adolescence. Adolescence is the transitional phase between childhood and adulthood, characterized by physical, emotional, and psychological changes.

Question 2

Question 2: Which age range is generally associated with adolescence?

A. 0-5 yearsB. 6-10 yearsC. 11-18 or 19 yearsD. 20-30 years

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Answer

C. 11-18 or 19 years. Adolescence typically spans from the onset of puberty to the attainment of reproductive maturity.

Question 3

Question 3: What is the term often used interchangeably with adolescents, referring to individuals aged 13-19?

A. InfantsB. TeenagersC. AdultsD. Senior citizens

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Answer

B. Teenagers. Teenagers are a subset of adolescents, specifically those between the ages of 13 and 19.

Question 4

Question 4: What is the specific stage within adolescence when physical changes occur, culminating in the ability to reproduce?

A. ChildhoodB. PubertyC. AdulthoodD. Old age

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Answer

B. Puberty. Puberty is the stage of adolescence marked by the development of secondary sexual characteristics and the attainment of reproductive capability.

Question 5

Question 5: Which of the following statements about the timing of adolescence is true?

A. It starts earlier in boys compared to girls.B. It starts earlier in girls compared to boys.C. It starts at the same time for both boys and girls.D. The timing is solely determined by environmental factors.

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Answer

B. It starts earlier in girls compared to boys. Girls typically begin puberty a year or two earlier than boys.

Question 6

Question 6: What is a key characteristic of adolescence?

A. A decrease in physical growthB. A sudden growth spurt and other physical transformationsC. A decline in cognitive abilitiesD. A period of emotional stability

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Answer

B. A sudden growth spurt and other physical transformations. Adolescence is marked by rapid physical development, including increases in height and changes in body composition.

Question 7

Question 7: What is the most noticeable physical change during puberty?

A. Development of facial hairB. Increase in heightC. Change in voiceD. Development of breasts

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Answer

B. Increase in height. The rapid growth spurt is one of the most prominent changes during puberty.

Question 8

Question 8: What causes the rapid increase in height during puberty?

A. Increased intake of calciumB. Elongation of long bonesC. Development of musclesD. Hormonal changes

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Answer

B. Elongation of long bones. The growth spurt is primarily due to the lengthening of the bones in the arms and legs.

Question 9

Question 9: What is used to estimate full height based on the current height and age?

A. Body Mass Index (BMI)B. Growth ChartC. Blood pressure measurementD. Heart rate

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Answer

B. Growth Chart. Growth charts provide average height percentages at different ages, which can be used to estimate final adult height.

Question 10

Question 10: What is the formula used to estimate full height?

A. Full Height = Present Height / % of Full Height at this ageB. Full Height = (Present Height / % of Full Height at this age) * 100C. Full Height = Present Height * % of Full Height at this ageD. Full Height = Present Height + % of Full Height at this age

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Answer

B. Full Height = (Present Height / % of Full Height at this age) * 100. This formula helps estimate the final adult height based on the current height and the percentage of growth already achieved.

Question 11

Question 11: Around what age do both boys and girls typically reach their maximum height?

A. 15 years oldB. 16 years oldC. 17 years oldD. 18 years old

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Answer

D. 18 years old. While growth spurts can vary, most individuals reach their full height by around 18 years of age.

Question 12

Question 12: Which statement about growth patterns during puberty is true?

A. Boys grow faster than girls initially.B. Girls grow faster than boys initially.C. Boys and girls grow at the same rate.D. Growth is solely determined by environmental factors.

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Answer

B. Girls grow faster than boys initially. Girls generally experience their growth spurt earlier than boys.

Question 13

Question 13: What largely determines an individual’s height?

A. DietB. ExerciseC. Inherited genesD. Hormones

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Answer

C. Inherited genes. Genetics plays a significant role in determining a person’s height.

Question 14

Question 14: What is crucial for healthy growth during adolescence?

A. Excessive exerciseB. Proper nutritionC. Avoiding all fatsD. Consuming only protein

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Answer

B. Proper nutrition. A balanced diet is essential to support the rapid growth and development during adolescence.

Question 15

Question 15: How does body shape change in boys during puberty?

A. Hips widenB. Shoulders broadenC. Voice becomes higher pitchedD. Body fat increases

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Answer

B. Shoulders broaden. Boys experience broadening of the shoulders and development of muscle mass.

Question 16

Question 16: How does body shape change in girls during puberty?

A. Shoulders broadenB. Area below the waist widensC. Muscle mass increases significantlyD. Voice deepens

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Answer

B. Area below the waist widens. Girls experience widening of the hips in preparation for potential childbirth.

Question 17

Question 17: What causes the changes in body shape during puberty?

A. Increased physical activityB. Hormonal influencesC. Dietary changesD. Environmental factors

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Answer

B. Hormonal influences. Hormones play a key role in the development of secondary sexual characteristics and changes in body composition.

Question 18

Question 18: What happens to the voice box (larynx) during puberty?

A. It shrinksB. It grows largerC. It remains the same sizeD. It is removed

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Answer

B. It grows larger. The larynx increases in size during puberty, leading to voice changes.

Question 19

Question 19: What is the visible protrusion on the neck caused by a larger voice box in boys called?

A. Adam’s appleB. Thyroid glandC. LarynxD. Voice box

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Answer

A. Adam’s apple. The Adam’s apple is the visible protrusion of the enlarged larynx in males.

Question 20

Question 20: Why might a boy’s voice crack or become hoarse during puberty?

A. Due to illnessB. Due to uncontrolled muscle growth in the voice boxC. Due to excessive talkingD. Due to a cold

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Answer

B. Due to uncontrolled muscle growth in the voice box. The rapid growth of the larynx can lead to temporary voice cracking or hoarseness.

Question 21

Question 21: How does the larynx growth differ between boys and girls during puberty?

A. It is more noticeable in girls.B. It is more noticeable in boys.C. It is the same in both boys and girls.D. There is no larynx growth during puberty.

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Answer

B. It is more noticeable in boys. The larynx growth is more pronounced in boys, leading to a deeper voice.

Question 22

Question 22: What happens to the activity of sweat and sebaceous glands during puberty?

A. It decreasesB. It increasesC. It remains the sameD. It stops completely

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Answer

B. It increases. Increased activity of these glands can contribute to acne and pimples.

Question 23

Question 23: What can increased secretions from sweat and oil glands lead to during puberty?

A. Dry skinB. Acne and pimplesC. Improved skin healthD. Reduced body odor

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Answer

B. Acne and pimples. The increased secretions can clog pores and lead to acne.

Question 24

Question 24: What are duct glands?

A. Glands that release hormones into the bloodstreamB. Glands that release secretions through ductsC. Glands that produce sperm cellsD. Glands that produce egg cells

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Answer

B. Glands that release secretions through ducts. Examples include sweat, oil, and salivary glands.

Question 25

Question 25: What are endocrine glands?

A. Glands that release secretions through ductsB. Glands that release hormones directly into the bloodstreamC. Glands that produce digestive enzymesD. Glands that produce saliva

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Answer

B. Glands that release hormones directly into the bloodstream. Endocrine glands are ductless glands.

Question 26

Question 26: Which of the following is an example of a duct gland?

A. Thyroid glandB. Sweat glandC. Pituitary glandD. Adrenal gland

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Answer

B. Sweat gland. Sweat glands have ducts through which sweat is released onto the skin’s surface.

Question 27

Question 27: Which of the following is an example of an endocrine gland?

A. Salivary glandB. Sebaceous glandC. Pituitary glandD. Tear gland

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Answer

C. Pituitary gland. The pituitary gland is a ductless gland that secretes hormones directly into the bloodstream.

Question 28

Question 28: What happens to the male sex organs during puberty?

A. They shrinkB. They develop fullyC. They remain unchangedD. They disappear

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Answer

B. They develop fully. The testes and penis enlarge, and sperm production begins.

Question 29

Question 29: What happens to the female sex organs during puberty?

A. They shrinkB. They enlargeC. They remain unchangedD. They disappear

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Answer

B. They enlarge. The ovaries enlarge, and egg maturation and release begin.

Question 30

Question 30: What is the primary function of the testes?

A. To produce eggsB. To produce spermC. To produce hormones onlyD. To regulate body temperature

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Answer

B. To produce sperm. The testes are responsible for sperm production in males.

Question 31

Question 31: What is the primary function of the ovaries?

A. To produce spermB. To produce eggsC. To produce testosteroneD. To regulate blood sugar

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Answer

B. To produce eggs. The ovaries are responsible for egg production in females.

Question 32

Question 32: What is the term for the voice box?

A. TracheaB. LarynxC. EsophagusD. Pharynx

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Answer

B. Larynx. The larynx houses the vocal cords and is responsible for sound production.

Question 33

Question 33: What causes the voice to deepen in boys during puberty?

A. Growth of the lungsB. Growth of the larynxC. Growth of the tongueD. Growth of the vocal cords

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Answer

B. Growth of the larynx. The enlargement of the larynx causes the vocal cords to lengthen and thicken, resulting in a deeper voice.

Question 34

Question 34: What is the name of the hormone produced by the testes?

A. EstrogenB. ProgesteroneC. TestosteroneD. Insulin

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Answer

C. Testosterone. Testosterone is the primary male sex hormone.

Question 35

Question 35: What is the name of the hormones produced by the ovaries?

A. Testosterone and estrogenB. Estrogen and progesteroneC. Insulin and glucagonD. Adrenaline and cortisol

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Answer

B. Estrogen and progesterone. Estrogen and progesterone are the primary female sex hormones.

Question 36

Question 36: What is the role of the pituitary gland in puberty?

A. It produces sex hormones.B. It controls the production of testosterone and estrogen.C. It regulates body temperature.D. It controls digestion.

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Answer

B. It controls the production of testosterone and estrogen. The pituitary gland secretes hormones that stimulate the testes and ovaries.

Question 37

Question 37: What is the effect of increased sweat and sebaceous gland activity during puberty?

A. It leads to smoother skin.B. It can contribute to acne and pimples.C. It reduces body odor.D. It has no effect on the skin.

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Answer

B. It can contribute to acne and pimples. Increased secretions can clog pores.

Question 38

Question 38: What are the two main types of glands in the body?

A. Sweat glands and oil glandsB. Duct glands and endocrine glandsC. Salivary glands and mammary glandsD. Digestive glands and reproductive glands

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Answer

B. Duct glands and endocrine glands. Duct glands have ducts, while endocrine glands are ductless.

Question 39

Question 39: Which gland is responsible for producing insulin?

A. Thyroid glandB. PancreasC. Adrenal glandD. Pituitary gland

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Answer

B. Pancreas. The pancreas produces insulin, which regulates blood sugar levels.

Question 40

Question 40: Which gland is attached to the brain and plays a crucial role in puberty?

A. Thyroid glandB. Pituitary glandC. Adrenal glandD. Pancreas

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Answer

B. Pituitary gland. The pituitary gland is a master gland that controls many other endocrine glands.

Question 41

Question 41: What kind of changes do adolescents experience in terms of mental and intellectual development?

A. Decline in learning capacityB. Significant intellectual development and increased independenceC. Decreased self-awarenessD. Reduced emotional range

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Answer

B. Significant intellectual development and increased independence. Adolescence is a time of enhanced cognitive abilities and a growing desire for autonomy.

Question 42

Question 42: What is a common emotional challenge during adolescence?

A. Feeling overly confidentB. Adjusting to physical and emotional changes, sometimes leading to insecurityC. Experiencing no emotional changesD. Becoming completely emotionally independent

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Answer

B. Adjusting to physical and emotional changes, sometimes leading to insecurity. The rapid changes can be challenging and sometimes cause insecurity.

Question 43

Question 43: What is important to remember about the physical and emotional changes during adolescence?

A. They are abnormal.B. They are signs of illness.C. They are normal.D. They are permanent.

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Answer

C. They are normal. These changes are a natural part of development.

Question 44

Question 44: What are secondary sexual characteristics?

A. Traits directly involved in reproductionB. Physical traits that distinguish males and females but are not directly involved in reproductionC. Emotional changes during pubertyD. Mental changes during adolescence

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Answer

B. Physical traits that distinguish males and females but are not directly involved in reproduction. These are features like facial hair in males and breast development in females.

Question 45

Question 45: Which of the following is an example of a secondary sexual characteristic in females?

A. Development of ovariesB. Breast developmentC. MenstruationD. Production of eggs

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Answer

B. Breast development. Breast development is a visible secondary sexual characteristic in females.

Question 46

Question 46: Which of the following is an example of a secondary sexual characteristic in males?

A. Development of testesB. Facial hair (mustache, beard)C. Production of spermD. Enlargement of penis

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Answer

B. Facial hair (mustache, beard). Facial hair is a distinguishing feature that appears in males during puberty.

Question 47

Question 47: What controls the changes at adolescence?

A. DietB. ExerciseC. HormonesD. Environment

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Answer

C. Hormones. Hormones are chemical messengers that regulate these developmental changes.

Question 48

Question 48: What type of glands secrete hormones?

A. Duct glandsB. Endocrine glandsC. Sweat glandsD. Salivary glands

Show Explanation

Answer

B. Endocrine glands. Endocrine glands are ductless and release hormones directly into the bloodstream.

Question 49

Question 49: Which hormone drives the development of male secondary sexual characteristics?

A. EstrogenB. ProgesteroneC. TestosteroneD. Insulin

Show Explanation

Answer

C. Testosterone. Testosterone is the primary male sex hormone.

Question 50

Question 50: Which hormone drives the development of female secondary sexual characteristics?

A. TestosteroneB. EstrogenC. InsulinD. Adrenaline

Show Explanation

Answer

B. Estrogen. Estrogen is the primary female sex hormone.

Question 51

Question 51: Which gland plays a crucial role by secreting hormones that control the production of testosterone and estrogen?

A. Thyroid glandB. Pituitary glandC. Adrenal glandD. Pancreas

Show Explanation

Answer

B. Pituitary gland. The pituitary gland regulates the activity of the testes and ovaries.

Question 52

Question 52: What is the role of the pituitary gland?

A. To produce testosteroneB. To produce estrogenC. To secrete hormones that control other endocrine glandsD. To regulate blood sugar

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Answer

C. To secrete hormones that control other endocrine glands. The pituitary gland is often called the “master gland.”

Question 53

Question 53: What is the function of mammary glands?

A. To produce eggsB. To produce spermC. To produce milkD. To produce hormones

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Answer

C. To produce milk. Mammary glands develop in females during puberty and are responsible for milk production after childbirth.

Question 54

Question 54: Which of the following is NOT a secondary sexual characteristic common to both males and females?

A. Hair growth underarmsB. Hair growth in the pubic regionC. Breast developmentD. Increased activity of sweat glands

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Answer

C. Breast development. Breast development is primarily a female secondary sexual characteristic.

Question 55

Question 55: What is the relationship between the pituitary gland and the testes/ovaries?

A. The testes/ovaries control the pituitary gland.B. The pituitary gland controls the testes/ovaries.C. They have no relationship.D. They both produce the same hormones.

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Answer

B. The pituitary gland controls the testes/ovaries. The pituitary gland secretes hormones that stimulate the testes and ovaries to produce their respective hormones.

Question 56

Question 56: How do hormones travel to their target sites in the body?

A. Through nervesB. Through the bloodstreamC. Through direct contactD. Through air

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Answer

B. Through the bloodstream. Hormones are transported throughout the body via the circulatory system.

Question 57

Question 57: What are target sites in the context of hormone action?

A. The glands that produce hormonesB. Specific tissues or organs where the hormone exerts its effectC. The blood vessels that carry hormonesD. The nerves that transmit hormone signals

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Answer

B. Specific tissues or organs where the hormone exerts its effect. Target sites have receptors specific to a particular hormone.

Question 58

Question 58: Which hormones are directly responsible for the development of secondary sexual characteristics?

A. Insulin and glucagonB. Testosterone and estrogenC. Adrenaline and cortisolD. Growth hormone and thyroxine

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Answer

B. Testosterone and estrogen. These are the primary sex hormones that influence sexual development.

Question 59

Question 59: What is the role of the pituitary gland in sexual maturation?

A. It produces testosterone and estrogen.B. It regulates the activity of the testes and ovaries.C. It controls body temperature.D. It regulates blood sugar.

Show Explanation

Answer

B. It regulates the activity of the testes and ovaries. The pituitary gland secretes hormones that stimulate the gonads.

Question 60

Question 60: What process marks the beginning of reproductive capability in males?

A. Development of facial hairB. Production of spermC. Deepening of voiceD. Broadening of shoulders

Show Explanation

Answer

B. Production of sperm. The ability to produce sperm signifies reproductive maturity in males.

Question 61

Question 61: What process marks the beginning of reproductive capability in females?

A. Breast developmentB. MenstruationC. Development of ovariesD. Widening of hips

Show Explanation

Answer

B. Menstruation. The onset of menstruation indicates the start of reproductive capability in females.

Question 62

Question 62: Which of the following statements about gamete production is true?

A. It lasts the same duration in males and females.B. It lasts significantly longer in males than in females.C. It lasts significantly longer in females than in males.D. It stops completely in both males and females after adolescence.

Show Explanation

Answer

B. It lasts significantly longer in males than in females. Men continue to produce sperm throughout much of their lives, while women’s reproductive window is shorter.

Question 63

Question 63: At what approximate age does the reproductive phase typically begin in females?

A. 5-7 yearsB. 10-12 yearsC. 18-20 yearsD. 30-35 years

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Answer

B. 10-12 years. This is the average age range for the onset of puberty and menstruation in girls.

Question 64

Question 64: What is the menstrual cycle?

A. The monthly release of sperm in malesB. The monthly series of changes in the female reproductive systemC. The growth spurt during pubertyD. The development of secondary sexual characteristics

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Answer

B. The monthly series of changes in the female reproductive system. The menstrual cycle involves ovulation and preparation of the uterus for pregnancy.

Accepted Answer

B. Approximately every 28-30 days. This is the average length of the menstrual cycle.

Accepted Answer

B. It thickens. The uterine lining builds up with blood vessels and nutrients to support a potential pregnancy.

Accepted Answer

B. The shedding of the thickened uterine lining. If fertilization doesn’t occur, the lining is shed, resulting in bleeding.

Accepted Answer

B. The first menstrual flow. Menarche marks the beginning of menstruation and reproductive capability in females.

Accepted Answer

B. The cessation of the menstrual cycle. Menopause marks the end of a woman’s reproductive years.

Accepted Answer

C. Hormones. A complex interplay of hormones controls the different phases of the menstrual cycle.

Accepted Answer

C. 45-50 years. This is the typical age range when women experience menopause.

Accepted Answer

B. An egg is released from the ovary. Ovulation is the release of a mature egg, making it available for fertilization.

Accepted Answer

B. In the fallopian tube. The fallopian tube is where sperm meets and fertilizes the egg.

Accepted Answer

C. The attachment of a fertilized egg to the uterine wall. Implantation is essential for the establishment of pregnancy.

Accepted Answer

B. The thickened uterine lining is shed. This shedding results in menstruation.

Accepted Answer

C. Zygote. The zygote is the single cell formed by the fusion of sperm and egg.

Accepted Answer

C. Fertilization. Fertilization is a separate event that may or may not occur during the menstrual cycle.

Accepted Answer

B. They precisely regulate the cycle. Hormones control the timing of egg maturation, release, and uterine preparation.

Accepted Answer

C. 28-30 days. This is the average length, though it can vary slightly between individuals.

Accepted Answer

B. It prepares the uterus for implantation of a fertilized egg. The thickened lining provides nutrients and support for the developing embryo.

Accepted Answer

C. To connect the ovaries to the uterus. The fallopian tubes are the site of fertilization and transport the fertilized egg to the uterus.

Accepted Answer

C. The organ where the developing fetus grows. The uterus is the muscular organ where a fertilized egg implants and develops into a fetus.

Accepted Answer

C. To connect the ovaries to the uterus. The fallopian tubes transport the egg from the ovary to the uterus and are the site of fertilization.

Accepted Answer

C. To connect the uterus to the vagina. The cervix is the lower part of the uterus that opens into the vagina.

Accepted Answer

A. The muscular tube that connects the uterus to the outside world. The vagina serves as the birth canal and also allows for the passage of menstrual blood.

Accepted Answer

B. Thread-like structures carrying genetic information. Chromosomes are located within the nucleus of cells and contain DNA.

Accepted Answer

A. 23. Humans have 23 pairs of chromosomes, for a total of 46.

Accepted Answer

A. X and Y. These are the sex chromosomes.

Accepted Answer

A. XX. Females have two X chromosomes.

Accepted Answer

B. XY. Males have one X and one Y chromosome.

Accepted Answer

B. Father. The sperm from the father carries either an X or a Y chromosome, determining the sex of the offspring.

Accepted Answer

C. Produces thyroxine. Thyroxine is essential for metabolism.

Accepted Answer

C. Iodine. Iodine deficiency can lead to goiter.

Accepted Answer

D. Insulin. Insulin regulates blood sugar levels.

Accepted Answer

C. Adrenaline. Adrenaline helps the body respond to stress.

Accepted Answer

B. The transformation from larva to adult. Examples include tadpole to frog and caterpillar to butterfly.

Accepted Answer

B. Insect hormones. Insects have specific hormones that regulate their metamorphosis.

Accepted Answer

C. Thyroxine. Thyroxine, produced by the thyroid gland, is crucial for frog metamorphosis.

Accepted Answer

B. Complete physical, mental, and social well-being related to the reproductive system. Reproductive health encompasses a broader concept than just the absence of disease.

Accepted Answer

C. Smoking. Smoking is detrimental to health, including reproductive health.

Reaching The Age of Adolescence Class 8 MCQ Online Test

Table of Contents

Adolescence and Puberty (MCQs 1 to 10): Reaching the Age of Adolescence Class 8 MCQ Online Test

Question 2: Which age range is generally associated with adolescence?A. 0-5 yearsB. 6-10 yearsC. 11-18 or 19 yearsD. 20-30 yearsShow ExplanationCorrect Answer: C. 11-18 or 19 years. Adolescence typically spans from the onset of puberty to the attainment of reproductive maturity.

Question 3: What is the term often used interchangeably with adolescents, referring to individuals aged 13-19?A. InfantsB. TeenagersC. AdultsD. Senior citizensShow ExplanationCorrect Answer: B. Teenagers. Teenagers are a subset of adolescents, specifically those between the ages of 13 and 19.

Question 7: What is the most noticeable physical change during puberty?A. Development of facial hairB. Increase in heightC. Change in voiceD. Development of breastsShow ExplanationCorrect Answer: B. Increase in height. The rapid growth spurt is one of the most prominent changes during puberty.

Changes at Puberty: Height and Body Shape (MCQs 11 to 25): Reaching the Age of Adolescence Class 8 MCQ Online Test

Question 11: Around what age do both boys and girls typically reach their maximum height?A. 15 years oldB. 16 years oldC. 17 years oldD. 18 years oldShow ExplanationCorrect Answer: D. 18 years old. While growth spurts can vary, most individuals reach their full height by around 18 years of age.

Question 13: What largely determines an individual’s height?A. DietB. ExerciseC. Inherited genesD. HormonesShow ExplanationCorrect Answer: C. Inherited genes. Genetics plays a significant role in determining a person’s height.

Question 14: What is crucial for healthy growth during adolescence?A. Excessive exerciseB. Proper nutritionC. Avoiding all fatsD. Consuming only proteinShow ExplanationCorrect Answer: B. Proper nutrition. A balanced diet is essential to support the rapid growth and development during adolescence.

Question 15: How does body shape change in boys during puberty?A. Hips widenB. Shoulders broadenC. Voice becomes higher pitchedD. Body fat increasesShow ExplanationCorrect Answer: B. Shoulders broaden. Boys experience broadening of the shoulders and development of muscle mass.

Question 18: What happens to the voice box (larynx) during puberty?A. It shrinksB. It grows largerC. It remains the same sizeD. It is removedShow ExplanationCorrect Answer: B. It grows larger. The larynx increases in size during puberty, leading to voice changes.

Question 19: What is the visible protrusion on the neck caused by a larger voice box in boys called?A. Adam’s appleB. Thyroid glandC. LarynxD. Voice boxShow ExplanationCorrect Answer: A. Adam’s apple. The Adam’s apple is the visible protrusion of the enlarged larynx in males.

Question 22: What happens to the activity of sweat and sebaceous glands during puberty?A. It decreasesB. It increasesC. It remains the sameD. It stops completelyShow ExplanationCorrect Answer: B. It increases. Increased activity of these glands can contribute to acne and pimples.

Question 23: What can increased secretions from sweat and oil glands lead to during puberty?A. Dry skinB. Acne and pimplesC. Improved skin healthD. Reduced body odorShow ExplanationCorrect Answer: B. Acne and pimples. The increased secretions can clog pores and lead to acne.

Changes at Puberty: Voice, Glands, and Sex Organs (MCQs 26 to 40): Reaching the Age of Adolescence Class 8 MCQ Online Test

Question 26: Which of the following is an example of a duct gland?A. Thyroid glandB. Sweat glandC. Pituitary glandD. Adrenal glandShow ExplanationCorrect Answer: B. Sweat gland. Sweat glands have ducts through which sweat is released onto the skin’s surface.

Question 27: Which of the following is an example of an endocrine gland?A. Salivary glandB. Sebaceous glandC. Pituitary glandD. Tear glandShow ExplanationCorrect Answer: C. Pituitary gland. The pituitary gland is a ductless gland that secretes hormones directly into the bloodstream.

Question 28: What happens to the male sex organs during puberty?A. They shrinkB. They develop fullyC. They remain unchangedD. They disappearShow ExplanationCorrect Answer: B. They develop fully. The testes and penis enlarge, and sperm production begins.

Question 29: What happens to the female sex organs during puberty?A. They shrinkB. They enlargeC. They remain unchangedD. They disappearShow ExplanationCorrect Answer: B. They enlarge. The ovaries enlarge, and egg maturation and release begin.

Question 30: What is the primary function of the testes?A. To produce eggsB. To produce spermC. To produce hormones onlyD. To regulate body temperatureShow ExplanationCorrect Answer: B. To produce sperm. The testes are responsible for sperm production in males.

Question 31: What is the primary function of the ovaries?A. To produce spermB. To produce eggsC. To produce testosteroneD. To regulate blood sugarShow ExplanationCorrect Answer: B. To produce eggs. The ovaries are responsible for egg production in females.

Question 32: What is the term for the voice box?A. TracheaB. LarynxC. EsophagusD. PharynxShow ExplanationCorrect Answer: B. Larynx. The larynx houses the vocal cords and is responsible for sound production.

Question 34: What is the name of the hormone produced by the testes?A. EstrogenB. ProgesteroneC. TestosteroneD. InsulinShow ExplanationCorrect Answer: C. Testosterone. Testosterone is the primary male sex hormone.

Question 35: What is the name of the hormones produced by the ovaries?A. Testosterone and estrogenB. Estrogen and progesteroneC. Insulin and glucagonD. Adrenaline and cortisolShow ExplanationCorrect Answer: B. Estrogen and progesterone. Estrogen and progesterone are the primary female sex hormones.

Question 39: Which gland is responsible for producing insulin?A. Thyroid glandB. PancreasC. Adrenal glandD. Pituitary glandShow ExplanationCorrect Answer: B. Pancreas. The pancreas produces insulin, which regulates blood sugar levels.

Question 40: Which gland is attached to the brain and plays a crucial role in puberty?A. Thyroid glandB. Pituitary glandC. Adrenal glandD. PancreasShow ExplanationCorrect Answer: B. Pituitary gland. The pituitary gland is a master gland that controls many other endocrine glands.

Mental, Intellectual, and Emotional Maturity & Secondary Sexual Characteristics (MCQs 41 to 55): Reaching the Age of Adolescence Class 8 MCQ Online Test

Question 43: What is important to remember about the physical and emotional changes during adolescence?A. They are abnormal.B. They are signs of illness.C. They are normal.D. They are permanent.Show ExplanationCorrect Answer: C. They are normal. These changes are a natural part of development.

Question 47: What controls the changes at adolescence?A. DietB. ExerciseC. HormonesD. EnvironmentShow ExplanationCorrect Answer: C. Hormones. Hormones are chemical messengers that regulate these developmental changes.

Question 48: What type of glands secrete hormones?A. Duct glandsB. Endocrine glandsC. Sweat glandsD. Salivary glandsShow ExplanationCorrect Answer: B. Endocrine glands. Endocrine glands are ductless and release hormones directly into the bloodstream.

Question 49: Which hormone drives the development of male secondary sexual characteristics?A. EstrogenB. ProgesteroneC. TestosteroneD. InsulinShow ExplanationCorrect Answer: C. Testosterone. Testosterone is the primary male sex hormone.

Question 50: Which hormone drives the development of female secondary sexual characteristics?A. TestosteroneB. EstrogenC. InsulinD. AdrenalineShow ExplanationCorrect Answer: B. Estrogen. Estrogen is the primary female sex hormone.

Question 53: What is the function of mammary glands?A. To produce eggsB. To produce spermC. To produce milkD. To produce hormonesShow ExplanationCorrect Answer: C. To produce milk. Mammary glands develop in females during puberty and are responsible for milk production after childbirth.

Role of Hormones in Puberty and Reproduction (MCQs 56 to 70): Reaching the Age of Adolescence Class 8 MCQ Online Test

Question 56: How do hormones travel to their target sites in the body?A. Through nervesB. Through the bloodstreamC. Through direct contactD. Through airShow ExplanationCorrect Answer: B. Through the bloodstream. Hormones are transported throughout the body via the circulatory system.

Question 61: What process marks the beginning of reproductive capability in females?A. Breast developmentB. MenstruationC. Development of ovariesD. Widening of hipsShow ExplanationCorrect Answer: B. Menstruation. The onset of menstruation indicates the start of reproductive capability in females.

Question 63: At what approximate age does the reproductive phase typically begin in females?A. 5-7 yearsB. 10-12 yearsC. 18-20 yearsD. 30-35 yearsShow ExplanationCorrect Answer: B. 10-12 years. This is the average age range for the onset of puberty and menstruation in girls.

Question 65: How often is an ovum typically released from an ovary?A. Every weekB. Approximately every 28-30 daysC. Every three monthsD. Once a yearShow ExplanationCorrect Answer: B. Approximately every 28-30 days. This is the average length of the menstrual cycle.

Question 68: What is menarche?A. The cessation of menstruationB. The first menstrual flowC. The release of an eggD. The fertilization of an eggShow ExplanationCorrect Answer: B. The first menstrual flow. Menarche marks the beginning of menstruation and reproductive capability in females.

Question 69: What is menopause?A. The beginning of menstruationB. The cessation of the menstrual cycleC. The release of an eggD. The fertilization of an eggShow ExplanationCorrect Answer: B. The cessation of the menstrual cycle. Menopause marks the end of a woman’s reproductive years.

Question 70: What primarily regulates the menstrual cycle?A. DietB. ExerciseC. HormonesD. EnvironmentShow ExplanationCorrect Answer: C. Hormones. A complex interplay of hormones controls the different phases of the menstrual cycle.

Reproductive Phase of Life in Humans (MCQs 71 to 85): Reaching the Age of Adolescence Class 8 MCQ Online Test

Question 71: What is the average age range for menopause?A. 20-25 yearsB. 30-35 yearsC. 45-50 yearsD. 60-65 yearsShow ExplanationCorrect Answer: C. 45-50 years. This is the typical age range when women experience menopause.

Question 2: Which age range is generally associated with adolescence?
A. 0-5 yearsB. 6-10 yearsC. 11-18 or 19 yearsD. 20-30 years
Show Explanation
Correct Answer: C. 11-18 or 19 years. Adolescence typically spans from the onset of puberty to the attainment of reproductive maturity.

Question 3: What is the term often used interchangeably with adolescents, referring to individuals aged 13-19?
A. InfantsB. TeenagersC. AdultsD. Senior citizens
Show Explanation
Correct Answer: B. Teenagers. Teenagers are a subset of adolescents, specifically those between the ages of 13 and 19.

Question 7: What is the most noticeable physical change during puberty?
A. Development of facial hairB. Increase in heightC. Change in voiceD. Development of breasts
Show Explanation
Correct Answer: B. Increase in height. The rapid growth spurt is one of the most prominent changes during puberty.

Question 11: Around what age do both boys and girls typically reach their maximum height?
A. 15 years oldB. 16 years oldC. 17 years oldD. 18 years old
Show Explanation
Correct Answer: D. 18 years old. While growth spurts can vary, most individuals reach their full height by around 18 years of age.

Question 13: What largely determines an individual’s height?
A. DietB. ExerciseC. Inherited genesD. Hormones
Show Explanation
Correct Answer: C. Inherited genes. Genetics plays a significant role in determining a person’s height.

Question 15: How does body shape change in boys during puberty?
A. Hips widenB. Shoulders broadenC. Voice becomes higher pitchedD. Body fat increases
Show Explanation
Correct Answer: B. Shoulders broaden. Boys experience broadening of the shoulders and development of muscle mass.

Question 18: What happens to the voice box (larynx) during puberty?
A. It shrinksB. It grows largerC. It remains the same sizeD. It is removed
Show Explanation
Correct Answer: B. It grows larger. The larynx increases in size during puberty, leading to voice changes.

Question 19: What is the visible protrusion on the neck caused by a larger voice box in boys called?
A. Adam’s appleB. Thyroid glandC. LarynxD. Voice box
Show Explanation
Correct Answer: A. Adam’s apple. The Adam’s apple is the visible protrusion of the enlarged larynx in males.

Question 22: What happens to the activity of sweat and sebaceous glands during puberty?
A. It decreasesB. It increasesC. It remains the sameD. It stops completely
Show Explanation
Correct Answer: B. It increases. Increased activity of these glands can contribute to acne and pimples.

Question 23: What can increased secretions from sweat and oil glands lead to during puberty?
A. Dry skinB. Acne and pimplesC. Improved skin healthD. Reduced body odor
Show Explanation
Correct Answer: B. Acne and pimples. The increased secretions can clog pores and lead to acne.

Question 26: Which of the following is an example of a duct gland?
A. Thyroid glandB. Sweat glandC. Pituitary glandD. Adrenal gland
Show Explanation
Correct Answer: B. Sweat gland. Sweat glands have ducts through which sweat is released onto the skin’s surface.

Question 27: Which of the following is an example of an endocrine gland?
A. Salivary glandB. Sebaceous glandC. Pituitary glandD. Tear gland
Show Explanation
Correct Answer: C. Pituitary gland. The pituitary gland is a ductless gland that secretes hormones directly into the bloodstream.

Question 28: What happens to the male sex organs during puberty?
A. They shrinkB. They develop fullyC. They remain unchangedD. They disappear
Show Explanation
Correct Answer: B. They develop fully. The testes and penis enlarge, and sperm production begins.

Question 29: What happens to the female sex organs during puberty?
A. They shrinkB. They enlargeC. They remain unchangedD. They disappear
Show Explanation
Correct Answer: B. They enlarge. The ovaries enlarge, and egg maturation and release begin.

Question 30: What is the primary function of the testes?
A. To produce eggsB. To produce spermC. To produce hormones onlyD. To regulate body temperature
Show Explanation
Correct Answer: B. To produce sperm. The testes are responsible for sperm production in males.

Question 31: What is the primary function of the ovaries?
A. To produce spermB. To produce eggsC. To produce testosteroneD. To regulate blood sugar
Show Explanation
Correct Answer: B. To produce eggs. The ovaries are responsible for egg production in females.

Question 32: What is the term for the voice box?
A. TracheaB. LarynxC. EsophagusD. Pharynx
Show Explanation
Correct Answer: B. Larynx. The larynx houses the vocal cords and is responsible for sound production.

Question 34: What is the name of the hormone produced by the testes?
A. EstrogenB. ProgesteroneC. TestosteroneD. Insulin
Show Explanation
Correct Answer: C. Testosterone. Testosterone is the primary male sex hormone.

Question 39: Which gland is responsible for producing insulin?
A. Thyroid glandB. PancreasC. Adrenal glandD. Pituitary gland
Show Explanation
Correct Answer: B. Pancreas. The pancreas produces insulin, which regulates blood sugar levels.

Question 40: Which gland is attached to the brain and plays a crucial role in puberty?
A. Thyroid glandB. Pituitary glandC. Adrenal glandD. Pancreas
Show Explanation
Correct Answer: B. Pituitary gland. The pituitary gland is a master gland that controls many other endocrine glands.

Question 43: What is important to remember about the physical and emotional changes during adolescence?
A. They are abnormal.B. They are signs of illness.C. They are normal.D. They are permanent.
Show Explanation
Correct Answer: C. They are normal. These changes are a natural part of development.

Question 47: What controls the changes at adolescence?
A. DietB. ExerciseC. HormonesD. Environment
Show Explanation
Correct Answer: C. Hormones. Hormones are chemical messengers that regulate these developmental changes.

Question 48: What type of glands secrete hormones?
A. Duct glandsB. Endocrine glandsC. Sweat glandsD. Salivary glands
Show Explanation
Correct Answer: B. Endocrine glands. Endocrine glands are ductless and release hormones directly into the bloodstream.

Question 49: Which hormone drives the development of male secondary sexual characteristics?
A. EstrogenB. ProgesteroneC. TestosteroneD. Insulin
Show Explanation
Correct Answer: C. Testosterone. Testosterone is the primary male sex hormone.

Question 50: Which hormone drives the development of female secondary sexual characteristics?
A. TestosteroneB. EstrogenC. InsulinD. Adrenaline
Show Explanation
Correct Answer: B. Estrogen. Estrogen is the primary female sex hormone.

Question 53: What is the function of mammary glands?
A. To produce eggsB. To produce spermC. To produce milkD. To produce hormones
Show Explanation
Correct Answer: C. To produce milk. Mammary glands develop in females during puberty and are responsible for milk production after childbirth.

Question 56: How do hormones travel to their target sites in the body?
A. Through nervesB. Through the bloodstreamC. Through direct contactD. Through air
Show Explanation
Correct Answer: B. Through the bloodstream. Hormones are transported throughout the body via the circulatory system.

Question 63: At what approximate age does the reproductive phase typically begin in females?
A. 5-7 yearsB. 10-12 yearsC. 18-20 yearsD. 30-35 years
Show Explanation
Correct Answer: B. 10-12 years. This is the average age range for the onset of puberty and menstruation in girls.

Question 65: How often is an ovum typically released from an ovary?
A. Every weekB. Approximately every 28-30 daysC. Every three monthsD. Once a year
Show Explanation
Correct Answer: B. Approximately every 28-30 days. This is the average length of the menstrual cycle.

Question 68: What is menarche?
A. The cessation of menstruationB. The first menstrual flowC. The release of an eggD. The fertilization of an egg
Show Explanation
Correct Answer: B. The first menstrual flow. Menarche marks the beginning of menstruation and reproductive capability in females.

Question 69: What is menopause?
A. The beginning of menstruationB. The cessation of the menstrual cycleC. The release of an eggD. The fertilization of an egg
Show Explanation
Correct Answer: B. The cessation of the menstrual cycle. Menopause marks the end of a woman’s reproductive years.

Question 70: What primarily regulates the menstrual cycle?
A. DietB. ExerciseC. HormonesD. Environment
Show Explanation
Correct Answer: C. Hormones. A complex interplay of hormones controls the different phases of the menstrual cycle.

Question 71: What is the average age range for menopause?
A. 20-25 yearsB. 30-35 yearsC. 45-50 yearsD. 60-65 years
Show Explanation
Correct Answer: C. 45-50 years. This is the typical age range when women experience menopause.