The following 20 Multiple Choice Questions (MCQ) are based on
Chapter 6: Adolescence: A Stage of Growth and Change from the NCERT Class 7
Science textbook Curiosity. Each question has four options - select the
best answer and click to check.
Instructions: Read each question carefully. Choose the most
appropriate option from (a), (b), (c), or (d). Click
Show Answer to reveal the correct answer with explanation.
Multiple Choice Questions
1Adolescence generally occurs between:
(a) 10 and 19 years
(b) Birth and 2 years
(c) 20 and 40 years
(d) Only 18 and 19 years
(a) is correct
The chapter describes adolescence as the transition from childhood toward adulthood, typically ages 10-19.
2The teenage years are:
(a) Exactly the whole of childhood
(b) After old age
(c) Unrelated to development
(d) A part of adolescence
(d) is correct
Ages ending in 'teen' fall within the broader adolescent period.
3Puberty is the stage when the body:
(a) Returns to infancy
(b) Needs no nutrition
(c) Begins attaining reproductive maturity
(d) Stops growing forever
(c) is correct
Hormonal changes bring reproductive organs toward maturity and cause secondary sexual characteristics.
4A rapid increase in height during adolescence is called a:
(a) Reflex
(b) Growth spurt
(c) Menstrual cycle
(d) Disease
(b) is correct
Many adolescents grow quickly over a relatively short period.
5Which change commonly occurs in both boys and girls?
(a) Growth of hair in armpits and pubic region
(b) Growth of moustache only
(c) Development of breasts only
(d) Menstruation
(a) is correct
Body hair growth in these regions is a shared secondary sexual change.
6The deeper voice in many adolescent boys is linked to growth of the:
(a) Stomach
(b) Kidney
(c) Fingernail
(d) Voice box or larynx
(d) is correct
The enlarging larynx and lengthening vocal cords lower the voice.
7The visible projection at the front of many boys' necks is the:
(a) Pancreas
(b) Salivary gland
(c) Adam's apple
(d) Thyroid disease in every case
(c) is correct
It is the enlarged front of the larynx and is a normal pubertal change.
8Menstruation is the periodic discharge of:
(a) Digestive juice
(b) Blood and tissue from the uterine lining
(c) Only sweat
(d) Air from lungs
(b) is correct
When pregnancy does not occur, the built-up uterine lining is shed.
9The menstrual cycle often occurs approximately every:
(a) 28-30 days, though variation is normal
(b) 24 hours exactly
(c) One year
(d) Two days in everyone
(a) is correct
Cycle length varies among individuals, especially during early adolescence.
10Which practice supports menstrual hygiene?
(a) Keeping used pads scattered
(b) Avoiding bathing
(c) Sharing unwashed materials
(d) Using clean absorbent material and changing it regularly
(d) is correct
Clean practices and safe disposal reduce discomfort, odour and infection risk.
11Adolescent changes are controlled largely by:
(a) Electric current
(b) Bone friction
(c) Hormones
(d) Only sunlight
(c) is correct
Chemical messengers from endocrine glands coordinate growth, puberty and reproduction.
12A balanced adolescent diet should include:
(a) No iron or calcium
(b) Proteins, carbohydrates, fats, vitamins and minerals
(c) Only sugary drinks
(d) Only fried snacks
(b) is correct
Rapid growth needs varied nutrients and sufficient energy.
13Iron-rich foods are especially important because iron helps form:
(a) Haemoglobin
(b) Tooth enamel only
(c) Skin oil
(d) Hormones only
(a) is correct
Haemoglobin in red blood cells carries oxygen.
14Iodine is needed for normal function of the:
(a) Lungs only
(b) Skin
(c) Large intestine
(d) Thyroid gland
(d) is correct
Iodine deficiency can enlarge the thyroid and affect growth and metabolism.
15Regular physical activity during adolescence helps:
(a) Replace sleep
(b) Remove the need for food
(c) Fitness, bone health and emotional well-being
(d) Prevent all growth
(c) is correct
Exercise supports multiple aspects of physical and mental health.
16Adequate sleep is important for adolescents because it supports:
(a) Dehydration
(b) Growth, learning and mood regulation
(c) Only hair growth
(d) Addiction
(b) is correct
Rest is essential for body repair, memory and emotional balance.
17Mood swings during adolescence can be related to:
(a) Hormonal, social and emotional changes
(b) A failure of character
(c) No real cause ever
(d) Only height
(a) is correct
Rapid development and changing experiences can make emotions vary.
18A healthy response to emotional difficulty is to:
(a) Hide every concern
(b) Use harmful substances
(c) Stop all social contact
(d) Talk with a trusted adult or counsellor
(d) is correct
Supportive communication can help adolescents understand and manage challenges.
19Why should tobacco, alcohol and addictive drugs be avoided?
(a) They replace nutrition
(b) They are harmless after one use
(c) They can harm health and lead to dependence
(d) They improve growth
(c) is correct
These substances can damage developing bodies and brains and make self-control difficult.
20A balanced social life includes:
(a) Ignoring personal boundaries
(b) Respectful relationships, study, recreation and rest
(c) Only screen time
(d) Avoiding family and friends
(b) is correct
Balance and respectful support promote well-being during adolescence.
