We have completed the NCERT/CBSE chapter-wise Multiple Choice Questions for Class 8 Science book Chapter 10 Reaching the Age of Adolescence with Answers by expert subject teacher for latest syllabus and examination. You can Prepare effectively for the exam taking the help of the Class 8 Science Objective Questions PDF free of cost from here. Students can take a free test of the Multiple Choice Questions of Reaching the Age of Adolescence. Each Questions has four options followed by the right answer. Download the Science Quiz Questions with Answers for Class 8 free Pdf and prepare to exam and help students understand the concept very well.
MCQ Questions for Class 8 Science with Answers
Q1. Hormones reaches to different parts:
(i) with lymph
(ii) by ducts
(iii) with blood
(iv) none of these
(iii) with blood
Q2. Larynx is called
(i) music box
(ii) voice box
(iii) respiratory organ
(iv) sound box
(ii) voice box
Q3. How many pairs of Chromosomes are found in nuclei of their cells?
(i) 22 pairs
(ii) 23 pairs
(iii) 24 pairs
(iv) 25 pairs
(ii) 23 pairs
Q4. When a sperm having X-chromosome fuses with the ovum, the child born will be
(i) male
(ii) female
(iii) male as well as female twin
(iv) it depends on the chance of fusion
(ii) female
Q5. The human body undergoes several changes during adolescence. These changes mark the onset of
(i) Puberty
(ii) Prematurity
(iii) Post adolescence
(iv) ageing
(i) Puberty
Q6. The changes which occurs at adolescence are controlled by
(i) Blood
(ii) Enzymes
(iii) Hormones
(iv) Lymph
(ii) Enzymes
Q7. Which of the following combination of chromosomes lead to the birth of a baby girl:
(i) XX
(ii) XY
(iii) X
(iv) Y
(i) XX
Q8. Which of the following combination of chromosomes lead to the birth of a baby boy:
(i) XX
(ii) XY
(iii) X
(iv) Y
(ii) XY
Q9. Initially girls grow
(i) slower than boys
(ii) faster than boys
(iii) both of these
(iv) none of these
(ii) faster than boys
Q10. The menstrual cycle stops in a women at about 50 years old. The woman is said to have reached
(i) puberty.
(ii) menopause.
(iii) menarche.
(iv) adolescence.
(ii) menopause.
Q11. Children gain height during
(i) adolescence
(ii) endocrine
(iii) balanced food
(iv) menarche
(i) adolescence
Q12. Testosterone is a hormone found in human
(i) Children
(ii) males and females
(iii) Females only
(iv) Males only
(iv) Males only
Q13. Puberty ends when an adolescent reaches
(i) Reproductive maturity
(ii) Physical maturity
(iii) Birth maturity
(iv) Growth maturity
(i) Reproductive maturity
Q14. Goitre’ is a disease of
(i) adrenal gland
(iii) pancreas
(ii) thyroid gland
(iv) none of these
(ii) thyroid gland
Q15. Puberty age in females is
(i) 10 – 12 years
(ii) 12 – 14 years
(iii) 8 – 10 years
(iv) 5 – 6 years
(i) 10 – 12 years
Q16. Sebaceous gland is also known as
(i) Pancreatic gland
(ii) Oil gland
(iii) Sweat gland
(iv) Mater gland
(ii) Oil gland
Q17. Adam’s apple is
(i) enlarged larynx
(ii) mammary glands
(iii) apple of adam
(iv) red apple
(i) enlarged larynx
Q18. Menopause occurs at the age of
(i) 10-12 years in boys
(ii) 45-50 years in men
(iii) 10-12 years in girls
(iv) 45-50 years in women
(iv) 45-50 years in women
Q19. Hormone reaches here through blood stream
(i) Proliferation site
(ii) Target site
(iii) Active site
(iv) Action site
(ii) Target site
Q20. Adreanlia hormone is produced by:
(i) pituitary gland
(ii) thyroid gland
(iii) adrenal gland
(iv) pancreas
(iii) adrenal gland
Q21. The male hormone is called
(i) estrogen
(ii) testosterone
(iii) thyroxine
(iv) insulin
(ii) testosterone
Q22. Adolescence begins around the age of
(i) 18 years
(ii) 13 years
(iii) 25 years
(iv) 11 years
(iv) 11 years
Q23. Out of these which one determines the sex of the baby?
(i) Hormones
(ii) Chloroplast
(iii) Chromosomes
(iv) Pituitary gland
(iii) Chromosomes
Q24. The period of maturity of reproductive organs is called.
(i) Adolescene period
(ii) Mensuration
(iii) Gestation period
(iv) None of the options
(i) Adolescene period
Q25. Which of the following does not take place during the final stage of the menstrual cycle?
(i) Further thickening of the uterine lining.
(ii) Repair and growth of the uterine lining.
(iii) Ovulation.
(iv) Both (ii) and (iii).
(iii) Ovulation.
Q26. Which of the following endocrine gland is called master gland:
(i) pituitary gland
(ii) adrenals glands
(iii) thyroid gland
(iv) pancreas
(i) pituitary gland
Q27. Menstruation occurs once in about
(i) 28 to 30 days
(ii) 25 to 30 days
(iii) 45 to 50 days
(iv) none of these
(i) 28 to 30 days
Q28. Which among the boys and girls puberty starts earlier?
(i) Any one
(ii) Boys
(iii) Girls
(iv) Both together
(iii) Girls
Q29. Reproduction age in women starts when their
(i) menstruation starts
(ii) breasts start developing
(iii) body weight increases
(iv) height increases
(i) menstruation starts
Q30. A girl has menstruation on the 6th day of the month. When is ovulation most likely to occur?
(i) 15th-17th day
(ii) 18th – 20th day
(iii) 23rd – 25th day
(iv) 27th-28th day
(ii) 18th – 20th day
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