CBSE Class 7 Science Chapter 06 Adolescence A Stage Of Growth And Change MCQs Set 02

Multiple Choice Questions (MCQs) for Class 7 Science: Chapter 06 Adolescence A Stage Of Growth And Change

Review structured MCQ sets for Class 7 Science Chapter 06 Adolescence A Stage Of Growth And Change. Built according to official CBSE guidelines, these downloadable questions support daily revision and core concept reinforcement.

Practice Chapter 06 Adolescence A Stage Of Growth And Change MCQs for Class 7 Science

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Question: At what age does adolescence typically begin, and until approximately what age does it generally continue?
A. Starting from birth and continuing until age 10
B. Starting around age 10 and typically lasting until age 19
C. Starting at age 12 and ending by age 16
D. Starting at age 15 and continuing into early adulthood
Show Answer & Explanation

Answer: (B) Starting around age 10 and typically lasting until age 19

Explanation:
The chapter explicitly states that adolescence typically occurs between the ages of 10–19 years, marking a period of rapid growth and development after childhood.

Question: Which of the following physical changes would be most directly visible to an observer meeting an adolescent boy for the first time after several months?
A. Development of the Adam's apple only
B. An increase in height along with broader shoulders and a wider chest
C. Growth of facial hair exclusively
D. Changes in voice pitch alone
Show Answer & Explanation

Answer: (B) An increase in height along with broader shoulders and a wider chest

Explanation:
The chapter describes that as boys grow during adolescence, they gain weight, their shoulders become broader, and their chests get wider—all observable changes that would be noticeable in overall body structure compared to before.

Question: Acne develops during adolescence through which of the following sequences?
A. The voice box grows and produces excess oil on the skin
B. Oily secretions increase, clog skin pores, and lead to infections resulting in pimples
C. Hormones cause the skin to become dry and crack, creating pimples
D. The body's immune system weakens, allowing bacteria to form pimples on the face
Show Answer & Explanation

Answer: (B) Oily secretions increase, clog skin pores, and lead to infections resulting in pimples

Explanation:
• Oily secretions from skin increase during adolescence
• These secretions clog the skin pores
• Clogged pores lead to infections
• This results in the appearance of pimples, which is acne.

Question: Why might a boy's facial appearance change noticeably during adolescence in ways that a girl's facial appearance might not change as visibly?
A. Boys eat more oily foods than girls during this period
B. Boys are exposed to more sunlight than girls
C. Boys often develop facial hair that grows into a moustache and beard as they approach adulthood
D. Boys' skin produces more sweat glands than girls do
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Answer: (C) Boys often develop facial hair that grows into a moustache and beard as they approach adulthood

Explanation:
The chapter specifies that boys often develop facial hair during adolescence, which later grows into a moustache and beard as they move towards adulthood, making this a characteristic visible change in their appearance.

Question: Menstruation is described as 'an important natural process and is one of the signs of good reproductive health.' What does this statement imply about the relationship between menstruation and a girl's biological maturity?
A. Menstruation indicates that a girl's body is deficient in iron and calcium
B. Menstruation shows that a girl's reproductive system is functioning normally and preparing for potential reproduction
C. Menstruation is a sign that a girl should immediately begin having children
D. Menstruation indicates that a girl's body is fighting off an infection
Show Answer & Explanation

Answer: (B) Menstruation shows that a girl's reproductive system is functioning normally and preparing for potential reproduction

Explanation:
By describing menstruation as important and a sign of good reproductive health, the chapter connects it to the maturation of the reproductive system—indicating that the body has reached a stage where it is capable of reproduction, a key feature of adolescence.

Question: What makes secondary sexual characteristics different from other physical changes that occur during adolescence?
A. They happen only in girls and not in boys
B. They are directly involved in the reproduction process
C. They help distinguish males from females but are not directly involved in reproduction itself
D. They only occur in the face and neck region of the body
Show Answer & Explanation

Answer: (C) They help distinguish males from females but are not directly involved in reproduction itself

Explanation:
The chapter explicitly states that secondary sexual characteristics like voice changes, facial hair in boys, and breast development in girls 'are not directly involved in the process of reproduction. However, these characteristic changes help distinguish males from females.'

Question: What is true about the normal variation in adolescent development among different individuals?
A. All adolescents experience changes at exactly the same age and pace
B. Variations in timing, nature, and extent of changes are completely normal
C. Boys always develop facial hair before girls develop breasts
D. Acne appears in every adolescent without exception
Show Answer & Explanation

Answer: (B) Variations in timing, nature, and extent of changes are completely normal

Explanation:
The chapter includes a 'key point to remember' section emphasizing that 'the timing, nature, and extent of these changes vary among individuals. These variations are completely normal. Each person experiences adolescence at his or her own pace.'

Question: Given the typical emotional and behavioural changes of adolescence, how might mood swings during this period lead to positive outcomes?
A. Mood swings cause adolescents to avoid all social interactions
B. Mood swings have no connection to any behavioral outcomes whatsoever
C. Mood swings can lead to engagement in varied activities like music, dance, or sports, which contribute to creativity and innovation
D. Mood swings force adolescents to stay at home and rest
Show Answer & Explanation

Answer: (C) Mood swings can lead to engagement in varied activities like music, dance, or sports, which contribute to creativity and innovation

Explanation:
The chapter's Table 6.2 connects mood swings to probable effects on behaviour, noting that adolescents may 'engage in varied activities like music, dance, or sports' and pursue 'self-exploration and involvement in activities that may lead to creativity and innovation.'

Question: Why is maintaining personal hygiene during adolescence particularly important in the armpits and pubic region?
A. These areas are where fat accumulates during adolescence
B. Proper hygiene in these areas helps protect against potential infections
C. The chapter suggests that poor hygiene in these areas will stop adolescent growth
D. Hygiene is only important for girls and not for boys during this period
Show Answer & Explanation

Answer: (B) Proper hygiene in these areas helps protect against potential infections

Explanation:
The chapter states: 'Maintaining body hygiene, particularly in the armpits and the pubic region, may protect us from potential infections.'

Question: What is the connection between hormones and the various changes observed during adolescence?
A. Hormones are produced only in the brain and control nothing else
B. Many changes in adolescence are mainly due to hormones, which regulate growth and development and are released by the brain in response to signals
C. Hormones are produced in the stomach and only affect digestion
D. Hormones prevent adolescents from growing taller
Show Answer & Explanation

Answer: (B) Many changes in adolescence are mainly due to hormones, which regulate growth and development and are released by the brain in response to signals

Explanation:
The chapter explains that hormones are 'certain chemicals produced in our bodies' that 'play a crucial role in regulating various aspects of growth and development' and are 'released at an appropriate time in response to signals from the brain.'

Question: How does understanding cyberbullying relate to the broader theme of making adolescence a positive experience?
A. Cyberbullying is mentioned as a harmless joke that adolescents should ignore
B. The chapter suggests cyberbullying is unavoidable and adolescents should simply accept it
C. The chapter identifies cyberbullying as a harmful behaviour and advises adolescents to handle it wisely by seeking help from parents and teachers
D. Cyberbullying only affects boys and not girls during adolescence
Show Answer & Explanation

Answer: (C) The chapter identifies cyberbullying as a harmful behaviour and advises adolescents to handle it wisely by seeking help from parents and teachers

Explanation:
The chapter defines cyberbullying as harassment through digital devices and emphasizes that if someone tries to bully an adolescent, 'it is important not to feel scared or helpless. Rather, handle it wisely and seek help from parents and teachers.'

Question: What is the primary reason the government has introduced various menstrual hygiene schemes and initiatives?
A. To discourage girls from attending school during menstruation
B. To provide free sanitary products and improve access to menstrual hygiene for adolescent girls and women
C. To prevent menstruation from occurring altogether
D. To increase the cost of sanitary pads for families
Show Answer & Explanation

Answer: (B) To provide free sanitary products and improve access to menstrual hygiene for adolescent girls and women

Explanation:
The chapter describes multiple government initiatives (MHS, RKSK, Suvidha Sanitary Napkin Initiative) specifically designed to 'provide these products free of charge or at a reduced price' and 'improve the menstrual hygiene of girls and women.'

Question: Which of the following best explains the purpose of addressing common myths about menstruation?
A. Menstruation is not actually a natural process in girls
B. To encourage girls to isolate themselves during their periods
C. To address and counter incorrect beliefs that cause unnecessary fear and shame around menstruation
D. To suggest that menstruation is a sign of illness
Show Answer & Explanation

Answer: (C) To address and counter incorrect beliefs that cause unnecessary fear and shame around menstruation

Explanation:
The chapter explains that many wrong beliefs about menstruation 'often lead to unnecessary fear, shame, or even guilt' and states 'Menstruation is a natural process, and such myths have no scientific basis.' The section aims to promote a scientific outlook to help society support women's reproductive health.

Question: What can be inferred about the relationship between good nutrition and adolescent growth?
A. Adolescents should avoid eating proteins and carbohydrates
B. A nutritious diet with proteins, carbohydrates, fats, vitamins, and minerals supports proper growth and development during this rapid growth period
C. Nutrition has no effect on adolescent growth or strength
D. The chapter suggests that adolescents need less nutrition than children do
Show Answer & Explanation

Answer: (B) A nutritious diet with proteins, carbohydrates, fats, vitamins, and minerals supports proper growth and development during this rapid growth period

Explanation:
The chapter states that 'since adolescence is a period of growth and development marked by several changes in the body, a nutritious diet is of utmost importance' and identifies specific nutrients needed for growth, strength, bone development, and blood formation.

Question: What distinguishes substance abuse from simply trying a harmful substance once?
A. Substance abuse occurs only in adolescents and not in adults
B. Substance abuse involves developing a strong recurring urge to consume harmful substances and using them regularly over time
C. Substance abuse has no connection to addiction whatsoever
D. The chapter suggests there is no difference between trying a substance once and substance abuse
Show Answer & Explanation

Answer: (B) Substance abuse involves developing a strong recurring urge to consume harmful substances and using them regularly over time

Explanation:
The chapter defines substance abuse as occurring when people 'develop a strong urge to take them again and again. Over time, they start using them regularly.' This distinguishes it from a one-time trial by establishing a pattern of regular consumption driven by addiction.

Question: When Venkatesh noticed his cousin Devyani had become taller and her voice had changed, these observations reflected which stage of human development?
A. childhood, as children continuously grow throughout their early years
B. adolescence, a period of rapid growth marked by noticeable physical transformations
C. early adulthood, when growth spurts typically occur
D. infancy, when babies undergo initial development
Show Answer & Explanation

Answer: (B) adolescence, a period of rapid growth marked by noticeable physical transformations

Explanation:
The chapter describes adolescence as occurring between ages 10–19 and states that 'other noticeable changes begin to occur' during this period, including increases in height and voice changes. The conversation between Venkatesh and Devyani specifically highlights these changes.

Question: Which of the following changes directly indicates that a girl's body is preparing for reproductive maturity?
A. development of wider shoulders and increased muscle strength
B. onset of the menstrual cycle and maturation of reproductive organs
C. growth of body hair in the armpits and pubic region
D. slight changes in voice quality and deepening of tone
Show Answer & Explanation

Answer: (B) onset of the menstrual cycle and maturation of reproductive organs

Explanation:
The chapter explains that the menstrual cycle marks an important internal change associated with reproductive capability. Unlike secondary sexual characteristics (which help distinguish males from females but are not directly involved in reproduction), the menstrual cycle is specifically linked to reproductive maturity.

Question: Why are certain physical changes described as 'secondary sexual characteristics' rather than simply listed as adolescent changes?
A. These characteristics are the most noticeable and happen earliest in puberty
B. They help distinguish between males and females but do not directly enable reproduction
C. They are less important than changes related to height and weight gain
D. They occur only in girls and not in boys during adolescence
Show Answer & Explanation

Answer: (B) They help distinguish between males and females but do not directly enable reproduction

Explanation:
• Secondary sexual characteristics help distinguish males from females
• They are not directly involved in the reproductive process
• Examples include facial hair in boys and breast development in girls
• The chapter emphasizes they are 'natural signs that the body is preparing for adulthood' but differ from changes that directly affect reproductive ability.

Question: If an adolescent girl's menstrual cycle lasts 23 days instead of the typical 28–30 days, what would this indicate?
A. the girl has a health problem requiring immediate medical intervention
B. the girl's menstrual cycle is abnormal and cannot support reproduction
C. the variation is within the range of normal cycles documented in the chapter (21–35 days)
D. the girl has not yet reached full reproductive maturity
Show Answer & Explanation

Answer: (C) the variation is within the range of normal cycles documented in the chapter (21–35 days)

Explanation:
The chapter specifically states that 'many healthy girls may have longer or shorter menstrual cycles ranging from 21–35 days,' directly indicating that a 23-day cycle falls within normal variation.

Question: How does the Adam's apple differ in its manifestation between adolescent boys and girls?
A. Both boys and girls develop it equally, though only boys notice it becoming visible
B. It grows noticeably in boys but remains too small to be visible in most girls
C. It develops only in boys and never appears in girls during adolescence
D. It appears in girls first, then later becomes visible in boys
Show Answer & Explanation

Answer: (B) It grows noticeably in boys but remains too small to be visible in most girls

Explanation:
The chapter notes that in adolescent boys, the voice box grows and 'may be seen as a bump in the throat region and is called the Adam's apple. However, it is not noticeable in every individual.' For girls, 'the voice box also grows in adolescent girls but it is not as big as in the boys,' explaining why the Adam's apple is visible in boys but typically not in girls.

Question: What is implied about the relationship between hormones and the various emotional and behavioral changes adolescents experience?
A. Emotional changes are unrelated to physical development and occur independently
B. Hormones control growth but have no influence on mood or emotional responses
C. Hormones regulate not only physical growth but also influence mood and behaviour during adolescence
D. behavioral changes are learned behaviors unaffected by the body's chemical processes
Show Answer & Explanation

Answer: (C) Hormones regulate not only physical growth but also influence mood and behaviour during adolescence

Explanation:
The chapter states hormones 'play a crucial role in regulating various aspects of growth and development' and specifically notes 'some hormones influence mood and behaviour,' connecting biological changes to emotional and behavioral experiences adolescents undergo.

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