Class 8 Science Chapter 10 MCQ (Multiple Choice Questions) of reaching the Age of Adolescence updated for academic session 2023-2024. All the MCQs are important for the school unit tests as well as terminal or periodic exams. Practice here MCQ online test with answers and explanation of each questions to prepare the chapter and become confident in all topics of chapter 10 of class 8 science. These MCQ quiz covers the complete chapter 10 reaching the Age of Adolescence from CBSE class viii science.

Class 8 Science Chapter 10 MCQ for 2023-2024

Class: 8Science
Chapter: 10Reaching the Age of Adolescence
Contents:MCQ Online Test with Explanation

MCQ Tests with Answers for Class 8 Science Chapter 10


AIDS can spread from an infected person to another person through:

[A]. Sharing food
[B]. Blood transfusion
[C]. Sharing comb
[D]. A mosquito bite

For the metamorphosis of tadpoles which of the following elements must be available in water?

[A]. Chlorine
[B]. Carbon
[C]. Sulphur
[D]. Iodine

The most conspicuous visible change that occurs in boys during puberty is:

[A]. Development in the voice box.
[B]. Increase in height.
[C]. Production of sperms.
[D]. Increased sweating.

Structures present in a cell which is responsible for determination of the sex of a baby is:

[A]. Cytoplasm
[B]. Cell membrane [C]
[C]. Nucleus
[D]. Chromosome

Consider the following statements and choose the incorrect one:

[A]. In females, the uterine wall thickens to receive the fertilised egg.
[B]. Endocrine glands release hormones directly into blood stream for transportation to the target site.
[C]. The sex hormones, adrenaline and oestrogen are responsible for the development of sexual characters.
[D]. Release of sex hormones is under the control of a hormone secreted from the pituitary gland.

The right meal for adolescents consists of:

[A]. Chips, noodles etc.
[B]. Chapati, dal, vegetables.
[C]. Rice, noodles, burger
[D]. Vegetable cutlet, puri, cold drink

Reproductive age in women starts when:

[A]. Menstruation Starts
[B]. Breasts start developing
[C]. Body weight increases
[D]. All the above.

Secondary sexual characters not present in male:

[A]. Growth of facial hair
[B]. Hair grows under the arms
[C]. Hair grows in the region above thighs
[D]. Development of breasts

Vikash is doing his homework which is given by his teacher. Would you help him to choose the incorrect sentences?

[A]. Adrenals are endocrine glands.
[B]. Adrenal glands are known as emergency hormone.
[C]. The aldosterone hormone secreted by adrenal glands maintain the correct salt balance in the blood.
[D]. None of the above.

Sex chromosome in female body is or are:

[A]. X
[B]. Y
[C]. XX
[D]. XY

Badal appeared in class test but he confused to know the correct statement. Would you help him to know that?

[A]. AIDS virus can be transmitted to an infant or small baby from the infected mother through her milk.
[B]. AIDS virus can be transmitted to a healthy person through sexual contact with a person infected with HIV.
[C]. AIDS virus can pass from an infected person to a healthy person by the selling of syringes used for injecting drugs.
[D]. All the above.

Adolescents should be careful about what they eat because adolescents should be careful about what they eat because:

[A]. Proper diet develops their brains
[B]. Proper diet is needed for the rapid growth taking place in their body
[C]. Adolescents feel hungry all the time
[D]. Taste buds are well developed in teenagers

Which of the following is a mis-matched pair?

[A]. Adrenaline : Pituitary gland
[B]. Estrogen : Ovary
[C]. Pancreas : Insulin
[D]. Testosterone : Testis

Choose the statement which are incorrect about drugs:

[A]. Drugs are addictive.
[B]. Drugs do physical harm to the body.
[C]. Drug addicts become irritable and lose interest in their studies or jobs.
[D]. Drugs are less powerful chemical substance and it should be used by anyone.

Puja is writing some statements but she confused to know whether the statements are correct or not? If you know the answer to this question, then tell her:

[A]. Regular physical exercise in fresh air keeps the body fit.
[B]. Regular physical exercise also improves the mental health.
[C]. Physical exercise builds and maintains healthy muscles, bones and joints.
[D]. All the above.

In the last year board examination, Rahul were asked a question where he had to choose the statement which was/were correct? Will you be able to answer this question?

[A]. The ovaries start releasing mature eggs or ova at puberty.
[B]. The testes begin to produce male sex cells called “sperms” at puberty.
[C]. Adolescence is the time in one’s life when the brain has the greatest capacity for learning.
[D]. All the above.

Estrogen hormone performs the following function. Choose the correct functions of this hormones:

[A]. Estrogen hormone produces female secondary sexual characteristics in girls at puberty (i.e., development of breast, broader hips).
[B]. Estrogen hormone causes the growth and development of female sex organs at puberty.
[C]. Estrogen hormone brings about the monthly preparation of uterus for pregnancy.
[D]. All the above.

The dramatic changes in body features associated with puberty are mainly because of the secretions of:

[A]. Thyroxine and Estrogen
[B]. Estrogen and Adrenaline
[C]. Thyroxine and Adrenaline
[D]. Estrogen and Testosterone

Which of the following endocrine gland does not occur as a pair in the human body?

[A]. Adrenal
[B]. Pituitary
[C]. Testis
[D]. Ovary

Which of the following can lead to menstruation in a 21-year-old woman during ovulation?

[A]. Sperms available for fertilization and Oviducts blocked
[B]. Oviducts blocked and Sperms not available for fertilization
[C]. Sperms available for fertilization and Sperms not available for fertilization
[D]. Oviducts blocked and Oviducts not blocked

A ten-year-old boy is 125 cm tall. If the present height of the boy is 78% of his full height, calculate the full height which the boy will eventually reach at the end of growth period.

[A]. 150.75
[B]. 160.25
[C]. 147.15
[D]. 163.85

Which of the following statement is or are correct?

[A]. A young human being below the age of full physical development is called a child.
[B]. A mature human being who is fully grown and developed is called an adult.
[C]. The transitional period of physical and mental development which occurs between childhood and adulthood, is called adolescent.
[D]. All the above.

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Last Edited: January 27, 2022