Class 8 Science Chapter 10 MCQ

Class 8 Science Chapter 10 MCQ (Multiple Choice Questions) of reaching the Age of Adolescence updated for academic session 2021-2022. 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 2021-2022

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

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

[A]. Chlorine
[B]. Carbon
[C]. Sulphur
[D]. Iodine
Q5

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




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

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

Sex chromosome in female body is or are:

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



Q11

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
Q12

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
Q13

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
Q14

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.
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

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 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.
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

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
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.

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