NEET UG Biology Human Reproduction MCQs

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Unit-VI

Chapter-3. Human Reproduction

IMPORTANT POINTS

The human is unisexual and viviparous. Reproduction is the mechanism by which continuation of generation is sustained. like all other vertebrates human also exhibits sexual dimorphism.The male and Female reproductive systems are organized by several types of organs.The organs of the male reproductive system are one pair of testes, one pair of epididymis, one pair of vas deferens, one pair of seminal vesicles prostate gland bulbourethral gland, urethra and penis. Female reproductive system consists of one pair of ovaries, the uterine tubes, uterus vagina, external genitalia and mammary glands. To produce gametes ,gametogensis occurs in both male and female.The male gamete is known as sperm and female gamete is known as ovum.The process of sperm production is known as spermatogenesis and ovum production is known as oogenesis.

Menstrual cycle is the events of the cyclic changes in the endometrium, which it goes through month after month as it responds to changes in the levels of female sex hormones in the blood. The one sperm and one ovum become involved in fertilization.A diploid zygote nucleus is formed through the fusion of male and female pronucleus.Now fertilized ovum is called zygote. During movement of zygote in to oviduct cleavage occurs.The embryo with 16 cells is called morula. Now the process of implantation of embryo take place

The period of development of young one in female reproductive system is known as pregnancy. It takes approximately 266 to 280 days. The process of child birth is called parturition. The mammary glands of the mother under go differentiation during pregnancy and start producing milk after delivery this process is called lactation.

M.C.Q.

1. Which of the following character is seen in female ?

(a) Muscles arestrong   (b) Mammary gland is well developed

(c) Voice is heavy   (d) Mammary gland is namesake only

2. Which of the following character is seen in male?

(a) Muscles are comparitively weak   (b) Voice is shrill

(c) Voice is heavy   (d) Beard and mustache is not seen

3. Where testes are situated?

(a) Abdominal cavity   (b) Dorsalside of abdominal cavity

(c) (a) and (b) both   (d) Scrotal sac.

4. Which hormone is released from testes ?

(a) Testosterone   (b) Estrogen   (c) Progesterone   (d) Relaxin

5. Which hormone is realeased from ovaries ?

   (a) Testosterone   (b) Estrogen   (c) Progesterone   (d) (b)and(c)both

6. Which of the following gland is seen in male reproductive system ?

(a) Seminal vesicle   (b) Prostate gland   (c) Bulbourethral gland   (d) All of these

7. How much lower the temperature of scrotal sac as compare to the normal body temperature ?

   (a) 3^oc   (b) 4^oc   (c) 5^oc   (d) 6^oc

8. What is the size of testis?

(a) 6 cm length and 2.5 cm diameter   (b) 5 cm length and 2.5 cm diameter

(c) 5 cm length and 3.5 cm diameter   (d) 6 cm length and 3.5 cm diameter

9. Which connective tissue surrounds testis ?

(a) Fibrous tissue   (b) Spongy connective tissue

(c) Tunica albuginea   (d) None of them

10. Seminiferous tubule in testis are lined with Which type of cells ?

(a) Germinal cells (b) only germinal cells (c) Sertoli cell (d) Both a and c

11. In testis which cells produce sperms?
(a) Germinal cells (b) Epithelial cell (c) Sertoli cell (d) Both a and c

12. Which cells provides nutrition to the sperms ?
(a) Germinal cells (b) Epithelial cell (c) Sertoli cell (d) None of them

13. In testis which cells are present in the interstitial space between seminiferous tubules?
(a) Sertoli cells (b) Germinal cells (c) Leydigs cells (d) (a)and(b)both

14. Which cells secretes testosterone ?
(a) Sertoli cells (b) Germinal cells (c) Interstitial cells (d) (a)and(b)both

15. Where seminiferous tubules of each lobe empty sperms ?
(a) Vas deference (b) Vasa efferentia (c) Epididymus (d) Seminal vesicles

16. Where is situated epididymis ?
(a) External surface of the testis (b) Above the testis
(c) Below the testis (d) Internal surface of the testis

17. What is length of epididymis?
(a) 6 c.m (b) 6 feet (c) 6 meter (d) 6 inch

18. Function of epididymis is ...
(a) A temporary storagesite
(b) For the immature sperms complete their maturation process
(c) Gain the ability of swimming (motility)
(d) All of these

19. When sperms are transported in to vas deference from epididymis ?
(a) Male is not sexually stimulated (b) Male is sexually stimulated
(c) The walls of the epididymis contract (d) First -b and after -c process occurs

20. What is length of vas deference ?
(a) 45 inch (b) 45 mm (c) 45 cm (d) 4.5 meter

Please refer to the file below - NEET UG Biology Human Reproduction