Class 8 Science Chapter 10 MCQ (Multiple Choice Questions) of reaching the Age of Adolescence updated for academic session 2022-2023. 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 2022-2023

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

MCQ Tests with Answers for Class 8 Science Chapter 10

Q1

The belief that the mother is completely responsible for the sex of the child is wrong because the child:

[A]. Gets sex chromosome only from the mother.
[B]. Develops in the body of the mother.
[C]. Gets one sex chromosome from the mother and the other from the father.
[D]. Gets sex chromosome only from the father.
Q2

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

[A]. Sharing food
[B]. Blood transfusion
[C]. Sharing comb
[D]. A mosquito bite
Q3

Given below are events that lead to pregnancy and development of the embryo. Which of the following options gives the correct order of sequence in which they occur?

[A]. Fertilization of egg, Maturation of egg, Release of egg, Embedding of the embryo in uterus.
[B]. Maturation of egg, Fertilization of egg, Release of egg, Embedding of the embryo in uterus.
[C]. Fertilization of egg, Embedding of the embryo in uterus, Maturation of egg, Release of egg.
[D]. Maturation of egg, Release of egg, Fertilization of egg, Embedding of the embryo in uterus.
Q4

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
Q5

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.
Q6

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
Q7

Reproductive age in women starts when:

[A]. Menstruation Starts
[B]. Breasts start developing
[C]. Body weight increases
[D]. All the above.
Q8

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.
Q9

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
Q10

Sex chromosome in female body is or are:

[A]. X
[B]. Y
[C]. XX
[D]. XY
Q11

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.
Q12

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.
Q13

The sex of a child is determined by:

[A]. The presence of an X chromosomes in egg (or ovum)
[B]. The presence of a Y chromosomes in sperm
[C]. The egg of father and mother
[D]. The length of the mother’s pregnancy
Q14

Which of the following is a mis-matched pair?

[A]. Adrenaline : Pituitary gland
[B]. Estrogen : Ovary
[C]. Pancreas : Insulin
[D]. Testosterone : Testis
Q15

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.
Q16

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.
Q17

In a quiz competition, you are asked a question where you have to choose the statement which is/ are correct?

[A]. A gland which secretes its product into a duct is called an exocrine gland.
[B]. Sweat glands and sebaceous glands or oil glands are exocrine glands.
[C]. A gland which does not have a duct and secretes its product directly into the blood stream, is called an endocrine gland.
[D]. All the above.
Q18

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
Q19

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

[A]. Adrenal
[B]. Pituitary
[C]. Testis
[D]. Ovary
Q20

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
Q21

Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?

[A]. The bulge at the front of throat or neck in grown up boys is called “Adam’s Apple”.
[B]. The smaller voice box in girls gives shrill voice or high-pitched voice to the girls.
[C]. The pimples and acne are formed due to the increased activity of sebaceous and sweat glands present in the skin.
[D]. All the above.
Q22

The various changes which occur in boys during puberty is or correct:

[A]. Testis and penis become larger
[B]. Chest and shoulders of boys broaden or become wider
[C]. Hair grows in armpits and in pubic regions or genital area between the thighs.
[D]. All the above.

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