Class 8 Science Chapter 7 MCQ (Multiple Choice Questions) of reaching the Age of Adolescence updated for academic session 2025-26. 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: 8 | Science |
Chapter: 7 | Reaching the Age of Adolescence |
Contents: | MCQ Online Test with Explanation |
Session: | 2025-26 |
MCQ Tests with Answers for Class 8 Science Chapter 7
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
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
Reproductive age in women starts when:
[A]. Menstruation Starts
[B]. Breasts start developing
[C]. Body weight increases
[D]. All the above.
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
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
Which of the following is a mis-matched pair?
[A]. Adrenaline : Pituitary gland
[B]. Estrogen : Ovary
[C]. Pancreas : Insulin
[D]. Testosterone : Testis
Q15
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.
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
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.
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
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
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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Last Edited: June 12, 2023