Class 12 Biology MCQ Chapter 3 Human Reproduction

Class 12 Biology MCQ Chapter 3 Human Reproduction Solutions English Medium to each chapter is provided in the list so that you can easily browse through different chapters Class 12 Biology MCQ Chapter 3 Human Reproduction Question Answer in English and select need one. AHSEC Class 12 Biology Objective Type Question Answer As Per AHSEC New Book Syllabus Download PDF. AHSEC Biology MCQ Class 12 Solutions.

Class 12 Biology MCQ Chapter 3 Human Reproduction

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. AHSEC Class 12 Biology Multiple Choice Solutions in English Medium are part of All Subject Solutions. Here we have given AHSEC Class 12 Biology MCQ Question Answer English Medium for All Chapters, You can practice these here.

Human Reproduction

Chapter: 3

MCQs

Choose the Correct Option:

1. Which layer of the uterus undergoes cyclic changes during the menstrual cycle?

(i) Perimetrium.

(ii) Myometrium.

(iii) Endometrium.

(iv) Epimetrium.

Ans: (iii) Endometrium.

2. What is the function of the acrosome in a sperm?

(i) Provides energy for motility.

(ii) Helps in fertilisation by releasing enzymes.

(iii) Carries the male chromosome.

(iv) Forms the tail of the sperm.

Ans: (ii) Helps in fertilisation by releasing enzymes.

3. Which hormone is responsible for the maintenance of pregnancy?

(i) FSH.

(ii) LH.

(iii) Progesterone.

(iv) Oxytocin.

Ans: (iii) Progesterone.

4. At which site does fertilisation normally occur in the human female?

(i) Uterus.

(ii) Vagina.

(iii) Ampullary region of oviduct.

(iv) Isthmus of oviduct.

Ans: (iii) Ampullary region of oviduct.

5. What triggers ovulation in a female’s menstrual cycle?

(i) Increase in FSH.

(ii) Decrease in estrogen.

(iii) LH surge.

(iv) Increase in progesterone.

Ans:  (iii) LH surge.

6. Which of the following cells provide nutrition to the developing sperms?

(i) Leydig cells.

(ii) Sertoli cells.

(iii) Theca cells.

(iv) Granulosa cells.

Ans: (ii) Sertoli cells.

7. What is the role of seminal plasma?

(i) Activates ovum.

(ii) Facilitates motility and nourishment of sperms.

(iii) Triggers menstruation.

(iv) Protects sperms from acidic pH.

Ans: (ii) Facilitates motility and nourishment of sperms.

8. Corpus luteum is formed after which event?

(i) Fertilisation.

(ii) Ovulation.

(iii) Implantation.

(iv) Menstruation.

Ans: (ii) Ovulation.

9. What happens during spermiation?

(i) Release of hormones.

(ii) Formation of spermatids.

(iii) Release of mature sperm from Sertoli cells.

(iv) Attachment of sperm to ovum.

Ans: (iii) Release of mature sperm from Sertoli cells.

10. What does the acrosome of a sperm contain?

(i) Genetic material.

(ii) Mitochondria.

(iii) Enzymes for ovum penetration.

(iv) Tail fibers.

Ans: (iii) Enzymes for ovum penetration.

11. In which stage is the human oocyte released during ovulation?

(i) Primary oocyte.

(ii) Oogonium.

(iii) Secondary oocyte.

(iv) Ovum.

Ans: (iii) Secondary oocyte.

12. Which hormone is responsible for milk ejection during lactation?

(i) Estrogen.

(ii) Prolactin.

(iii) Oxytocin.

(iv) Progesterone.

Ans: (iii) Oxytocin.

13. Which structure of the sperm provides energy for movement?

(i) Head.

(ii) Acrosome.

(iii) Middle piece.

(iv) Tail.

Ans: (iii) Middle piece.

14. What ensures monospermy (entry of only one sperm) into the ovum?

(i) LH surge.

(ii) Zona pellucida block.

(iii) Progesterone release.

(iv) Hormonal imbalance.

Ans: (ii) Zona pellucida block.

15. Which of the following hormones maintains the corpus luteum during early pregnancy?

(i) FSH.

(ii) LH.

(iii) hCG.

(iv) Estrogen.

Ans: (iii) hCG.