- how many days does it take for spermatogenesis to take
place?
(a) 40 to 65 days (b) 60 to 75 days
(c) 70 to 95 days (d) 50 to 65 days - Sperms of an animal species ‘a’ cannot normally fertilise the
ovum of another species ‘B’ because
(a) fertilizin of ‘a’ and ‘B’ are not compatible
(b) antifertilizin of ‘a’ and fertilizin of ‘B’ are not compatible
(c) fertilizin of ‘a’ and antifertilizin of ‘B’ are not
compatible
(d) none of these. - Onset of menstruation is due to
(a) increase in level of progesterone
(b) increase in oestrogen level
(c) increase in FSh level
(d) decrease in oxytocin level. - antrum is the cavity of
(a) gastrula (b) Graafian follicle
(c) ovary (d) blastula. - Which one of the following events is correctly matched with
the time period in a normal menstrual cycle?
(a) release of egg : 5th day
(b) Endometrium regenerates : 5-10 days
(c) Endometrium secretes nutrients for implantation:
11-18 days
(d) rise in progesterone level : 1-15 days - The function of the secretion of prostate gland is to
(a) inhibit sperm activity (b) attract sperms
(c) stimulate sperm activity
(d) none of these. - Ovulation in the human female normally takes place
(a) at the mid secretory phase
(b) just before the end of the secretory phase
(c) at the beginning of the proliferative phase
(d) at the end of the proliferative phase. - The phase of menstrual cycle in humans that last for 7-8
days, is
(a) follicular phase (b) ovulatory phase
(c) luteal phase (d) menstruation. - Which of these combinations is most likely to be present
before ovulation occurs?
(a) FSh, corpus luteum, estrogen, secretory uterine lining
(b) Lh, corpus luteum, progesterone, secretory uterine
lining
(c) FSh, follicle, estrogen, uterine lining becoming thick
(d) Luteinising hormone (Lh), follicle, progesterone, thick
uterine lining- In human females, meiosis-II is not completed until
(a) uterine implantation (b) birth
(c) puberty (d) fertilisation. - If for some reason, the vasa efferentia in the human reproductive
system get blocked, the gametes will not be transported from
(a) testes to epididymis (b) epididymis to vas deferens
(c) ovary to uterus (d) vagina to uterus. - Sequence of hormones during menstrual cycle is
(a) estrogen, progesterone and FSh
(b) progesterone, estrogen and FSh
(c) FSh, estrogen and progesterone
(d) FSh, progesterone and estrogen. - Which of the following statements is wrong?
(a) Sertoli cells provide nutrition to the developing male
germ cells.
(b) Leydig cells synthesise and secrete androgens.
(c) Secretions of the acrosome helps the sperm to enter
into the cytoplasm of the ovum.
(d) Secondary spermatocytes are diploid. - The figure shows a section A
Bof human ovary. Select the
o p t i o n w h i c h g i v e s t h e
correct identification of
either a or B with function/
characteristic.
(a) B- corpus luteum - secretes progesterone
(b) a- Tertiary follicle - forms Graafian follicle
(c) B- corpus luteum - secretes estrogen
(d) a- Primary oocyte - it is in the prophase-I of the meiotic
division- In spermatogenesis, reduction division of chromosome occurs
during conversion of
(a) spermatogonia to primary spermatocytes
(b) primary spermatocytes to secondary spermatocytes
(c) secondary spermatocytes to spermatids
(d) spermatids to sperms.
ANSWER KEY
- (b) 2. (b) 3. (a) 4. (b) 5. (b)
- (c) 7. (d) 8. (a) 9. (c) 10. (d)
- (a) 12. (c) 13. (d) 14. (a) 15. (b)