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

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.
Q3

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

[A]. Chlorine
[B]. Carbon
[C]. Sulphur
[D]. Iodine
Q4

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.
Q5

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.
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

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.
Q8

Reproductive phase in females is form the age of:

[A]. 10 – 12 years to 40 – 45 years.
[B]. 18 – 21 years to 30 – 35 years.
[C]. 21 – 23 years to 40 – 45 years.
[D]. 25 – 30 years to 40 – 45 years.
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

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.
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

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
Q14

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
Q15

Which of the following is a mis-matched pair?

[A]. Adrenaline : Pituitary gland
[B]. Estrogen : Ovary
[C]. Pancreas : Insulin
[D]. Testosterone : Testis
Q16

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.
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

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.
Q19

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
Q20

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

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

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.

Download App for Class 8

Feedback and Suggestion

Provide your feedback and suggestion to improve the quality of the contents. We are regularly updating our contents as per suggestion we receive. All the important questions, MCQ online tests and other study material are based on your suggestions.