Class 8 Science Chapter 7 MCQ (Multiple Choice Questions) of reaching the Age of Adolescence updated for academic session 2023-24. 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 7 of class 8 science. These MCQ quiz covers the complete chapter 7 reaching the Age of Adolescence from CBSE class viii science.

Class 8 Science Chapter 7 MCQ

Class: 8Science
Chapter: 7Reaching the Age of Adolescence
Contents:MCQ Online Test with Explanation

MCQ Tests with Answers for Class 8 Science Chapter 7


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.

Which of the following statement is or are incorrect?

[A]. Reproductive life of a woman lasts from menarche to menopause.
[B]. The development of a caterpillar to an adult butterfly is termed as metamorphosis.
[C]. The overgrowth of muscles in larynx leads to the hoarse voice in adolescent boys.
[D]. The deficiency of adrenaline hormones causes a disease known as goitre.

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

Read the following sentences carefully, and choose the incorrect one:

[A]. [A] Testosterone hormone produces male secondary sexual characteristics in boys at puberty (such as deeper voice, growth of facial hair etc.)
[B]. Testosterone hormone causes “growth spurt” in boys at puberty.
[C]. Testosterone hormone causes the growth and development of male sex organs at puberty.
[D]. None of 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

Payel is completed her science chapter where she wrote some statements. She wants to know whether the statements are correct or not? Payel wants to take help from you:

[A]. Thyroid is a large endocrine gland in the neck.
[B]. Thyroid gland makes a hormone called thyroxine which contains iodine.
[C]. The deficiency of thyroxine hormone causes a disease known as “goitre”.
[D]. People are advised to take iodised salt which contains appropriate amount of sodium chloride.

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.

Full name of “AIDS”. Choose the correct options:

[A]. Auto Immune Disease Symptom
[B]. Acute Immune Deficiency Symptom
[C]. Antiretroviral Infection Disease System
[D]. Acquired Immune Deficiency Syndrome

Which of the following is a mis-matched pair?

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

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.

Some of the problems brought about by early marriage in girls. Choose the incorrect one(s):

[A]. The girls younger than 18 years of age are not prepared for motherhood.
[B]. Early marriage and motherhood cause health problems in the mother.
[C]. Early marriage and motherhood reduces the chances of higher education for girls.
[D]. None of 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.

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 is the secondary sexual characteristics in females?

[A]. Low pitched voice
[B]. Broadening of chest
[C]. Broadening of hip
[D]. Developing Adam’s apple

A doctor advised a person to take injection of insulin because:

[A]. His blood pressure was high
[B]. His heart beat was high
[C]. His blood sugar was high
[D]. His thyroxine level in blood was high

In a science quiz competition, Payel is asked a question where she had to choose the statement which was/were incorrect?

[A]. Puberty tends to start earlier in girls (female) than in boys (males).
[B]. In this period, the growth of voice box in girls is much more than the growth of voice box in boys.
[C]. The bigger voice box in boys gives deeper voice (or low-pitched voice) to the boys.
[D]. The most conspicuous change during puberty is the sudden increase in the height of boys and girls.

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Last Edited: June 12, 2023