Question 1

Adolescents, especially girls, may sometimes suffer from blood-related health problems (s) because of a deficiency of iron or vitamin B12 in the body. (Page 80)
(i) Find out about such health problem(s).
[ii] How can we manage iron deficiency in our body?
(iii) Find out about government schemes aimed to prevent such deficiencies.

Accepted Answer

(i) A common blood-related health problem caused by a deficiency of iron or vitamin B12 is anaemia. In anaemia, the amount of haemoglobin in the blood becomes low. Haemoglobin helps carry oxygen in the blood, so when its level is low, the blood cannot carry enough oxygen to different parts of the body. As a result, a person feel tired, weak, and dizzy.(ii) By consuming iron-rich foods like green leafy vegetables, beans, lentils, fortified cereals, and meat, one can overcome iron deficiency.(iii) Some of the government schemes are:(a) NIPI-National Iron Plus Initiative Control of Iron Deficiency Anaemia(b) Mid-day Meal Scheme(c) Anaemia Mukt Bharat (AMB)

Question 2

Discuss the sources of vitamin B12 with your teacher. (Page 80)

Accepted Answer

Vitamin B12 is primarily found in animal- based foods such as milk, meat, fish, poultry, eggs, and dairy products. It’s essential for red blood cell formation, neurological function, and DNA synthesis.NCERT Class 7 Science Chapter 6 Question Answer Adolescence A Stage of Growth and Change (Exercise)Let Us Enhance Our Learning

Question 3

Ramesh, an 11 year old boy, developed a few pimples on his face. His mother told him that this is because of ongoing biological changes in his body.
(i) What could be the possible reasons for the development of these pimples on his face?
(ii) What can he do to get some relief from these pimples?

Accepted Answer

(i) The pimples on Ramesh’s face could be due to the hormonal changes that occur during puberty. During this time, the body produces more hormones, which can make the skin’s oil glands produce more oil. This excess oil can clog the pores, leading to pimples or acne.(ii) Ramesh can get some relief from pimples if he:Uses gentle cleanser for his faceDrinks plenty of waterIncorporates a balanced diet into his lifeAvoid squeezing or picking the pimples, as it can worsen the condition.

Question 4

Which of the following food groups would be a better option for adolescents and why?

Accepted Answer

Food group (ii) would be a better option for adolescents as it is composed of vegetables, grains, daily products, etc. Such foods are rich in essential nutrients like proteins, carbohydrates, vitamins, and minerals, which are important for growth,  development, and overall health during adolescence.

Question 5

Unscramble the underlined word in the following sentences:
(i) The discharge of blood in adolescent girls which generally occurs every 28-30 days is nstmnoiaretu.
(ii) The hoarseness in the voice of adolescent boys is due to enlarged iceov xob.
(iii) Secondary sexual characteristics are natural signs that the body is preparing for adulthood and mark the onset of urtvpeb.
(iv) We should say NO to lahoclo and srugd as they are addictive.

Accepted Answer

nstmnoiaretu-menstruationiceov xob-voice boxurtypeb-pubertylahoclo and srugd-alcohol and drugs

Source: This question is from Adolescence A Stage of Growth and Change, Science &mdash; Class 7, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Adolescence A Stage of Growth and Change: Unscramble, Underlined, Word, Sentences, Discharge, Blood. These are fundamental topics in Science that students are expected to master as part of the CBSE Class 7 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This QuestionRead the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to RememberRead the question carefully and identify all parts before answering.
Use the terminology specific to this subject and chapter.
Review the textbook content for this chapter before attempting questions.
Practice writing concise, well-structured answers within time limits.
Related Questions from Adolescence A Stage of Growth and ChangeQ1: Adolescents, especially girls, may sometimes suffer from blood-related health problems (s) because...
Q10: Prepare a poster mentioning the tips for adolescents to live a healthy lifestyle.Answer:Do it...
Q11: During adolescence, the boys and girls undergo certain physical changes, a few of which are given...
Q12: Prepare a poster mentioning the tips for adolescents to live a healthy lifestyle.
Q2: Discuss the sources of vitamin B12 with your teacher. (Page 80)
Practice more questions from Adolescence A Stage of Growth and Change &mdash; Science, Class 7 CBSE

Question 6

Shalu told her friend, “Adolescence brings only physical changes, like growing taller or developing body hair. ” Is she correct? What would you change in this description of adolescence?

Accepted Answer

Shalu is not completely correct. Adolescence is not only about physical changes like growing taller or developing body hair. It also includes the development of reproductive capability, as well as emotional and behavioral changes.

Question 7

During a discussion in the class, some of the students raised the following points. What questions would you ask them to check the correctness of these points?
(i) Adolescents do not need to worry about behavioural changes.
(ii) If someone tries a harmful substance once, they can stop anytime they want.

Accepted Answer

The following questions can be asked for the correctness of the point (i):(a) What makes you think that “behavioural changes’ during adolescence are something to worry about?(b) Why do you think it is important for adolescents to adapt to changes in a positive way rather than worrying about them?The following questions can be asked for the correctness of the point (ii):(a) What makes you think that someone can stop using a harmful substance whenever they want?(b) Are you aware of the concept of addiction? How might using a substance even once affect someone’s ability to stop?(c) Have you heard of any studies or research that suggest it’s easy to stop using harmful substances after trying them once?

Question 8

Adolescents sometimes experience mood swings. On some days, they feel very energetic and happy, while on other days, they may feel low. What other behavioural changes are associated with this age?

Accepted Answer

Adolescents undergo several behavioural changes, including:Intense emotions that may change quicklyA strong desire for independence and personal decision-makingPressure to fit in with peers and follow group normsExploration of personal identity, including sexual identityIncreased use of technology, such as mobile phones and social media.

Question 9

During adolescence, the boys and girls undergo certain physical changes, a few of which are given below.(i) Change in voice(ii) Development of breasts(iii) Growth of moustache(iv) Growth of facial hair(v) Pimples on the face(vi) Growth of hair in the pubic region(vii) Growth of hair in armpitsCategorise these changes in the table given below:

Accepted Answer

Physical changes during adolescence

Observed only in boys
Observed only in girls
Common in boys and girls

(i) Change in voice
(ii) Development of breasts
(v) Pimples on the face

(iii) Growth of moustache

(vi) Growth of hair in the pubic region

(iv) Growth of facial hair

(vii) Growth of hair in armpits

Question 10

Prepare a poster mentioning the tips for adolescents to live a healthy lifestyle.Answer:Do it yourself.

Accepted Answer

Answer:
Do it yourself. Activity 6.2: Let Us List (page 78) Table 6.2: Emotional changes, their probable effects on behaviour, and ways for positive growth and development

Key emotional changes
Probable effects on behaviour
Ways for positive growth and development

Mood swings
Engage in varied activities like music, dance, or sports
Self-exploration and involvement in activities that may lead to creativity and innovation

Strong emotions
Increased sensitivity
Compassion, involvement in social work

Fear or insecurity
Self-doubt
Practicing kindness toward yourself

Activity 6.3: Let Us List (Page 79) Table 6.3: Food sources, nutrients present in them, and functions of these nutrients

Food sources
Nutrients we get from them
Functions of these nutrients

Milk, millet, curd, cheese, and paneer
Calcium, proteins, fats, vitamins, minerals
To help optimal bone growth, keens teeth healthy

Pulses, beans, milk. meat, butter, wheat, rice, and maize
Proteins, fats and carbohydrates
To help proper growth, gain strength, and improve levels of energv and renair of damaged cells

Spinach, kidney beans, and dried fruits like raisins, and figs
Iron,dietary fibres
To help in the formation of blood,and removes undigested food from the body

Activity 6.4: Let Us Spread Awareness (Page 83) Table 6.4: Dos and don’ts to be followed on social media

Dos
Don’ts

Be respectful and kind.
Do not share personal photos with strangers/ virtual friends.

Think before posting.
Do not share Dersonal information with strangers/virtual friends

Protect privacy
Do not share vour location wherever vou are travelling.

Question 11

During adolescence, the boys and girls undergo certain physical changes, a few of which are given below.
(i) Change in voice
(ii) Development of breasts
(iii) Growth of moustache
(iv) Growth of facial hair
(v) Pimples on the face
(vi) Growth of hair in the pubic region
(vii) Growth of hair in armpits
Categorise these changes in the table given below:
Physical changes during adolescence
Observed only in boys
Observed only in girls
Common in boys and girls

Accepted Answer

Physical changes during adolescenceObserved only in boysObserved only in girlsCommon in boys and girls(i) Change in voice(ii) Development of breasts(v) Pimples on the face(iii) Growth of moustache(vi) Growth of hair in the pubic region(iv) Growth of facial hair(vii) Growth of hair in armpits

Question 12

Prepare a poster mentioning the tips for adolescents to live a healthy lifestyle.

Accepted Answer

Do it yourself.Class 7 Adolescence A Stage of Growth and Change Question Answer (Activities)Activity 6.1: Let Us Discuss (Pages 74-75)Answer:Do it yourself.Activity 6.2: Let Us List (page 78)Table 6.2: Emotional changes, their probable effects on behaviour, and ways for positive growth and developmentKey emotional changesProbable effects on behaviourWays for positive growth and developmentMood swingsEngage in varied activities like music, dance, or sportsSelf-exploration and involvement in activities that may lead to creativity and innovationStrong emotionsIncreased sensitivityCompassion, involvement in social workFear or insecuritySelf-doubtPracticing kindness toward yourselfActivity 6.3: Let Us List (Page 79)Table 6.3: Food sources, nutrients present in them, and functions of these nutrientsFood sourcesNutrients we get from themFunctions of these nutrientsMilk, millet, curd, cheese, and paneerCalcium, proteins, fats, vitamins, mineralsTo help optimal bone growth, keens teeth healthyPulses, beans, milk. meat, butter, wheat, rice, and maizeProteins, fats and carbohydratesTo help proper growth, gain strength, and improve levels of energv and renair of damaged cellsSpinach, kidney beans, and dried fruits like raisins, and figsIron,dietary fibresTo help in the formation of blood,and removes undigested food from the bodyActivity 6.4: Let Us Spread Awareness (Page 83)Table 6.4: Dos and don’ts to be followed on social mediaDosDon’tsBe respectful and kind.Do not share personal photos with strangers/ virtual friends.Think before posting.Do not share Dersonal information with strangers/virtual friendsProtect privacyDo not share vour location wherever vou are travelling.