NEETZoologyHuman Reproduction
Read the following statements regarding gametogenesis in humans: (A) Oogonia continue to be formed and added in the ovary after birth until puberty. (B) Primary oocytes are temporarily arrested at the prophase-I stage of meiotic division. (C) Both spermatogenesis and oogenesis are initiated at puberty. (D) A large number of primary follicles degenerate during the phase from birth to puberty. How many of the above sta
Options
- AOne
- BTwo
- CThree
- DFour
Correct answer
B. Two
Step-by-step solution
Statement (A) is incorrect because no more oogonia are formed and added after birth. Statement (B) is correct as the primary oocytes enter prophase-I of meiotic division and get temporarily arrested at this stage. Statement (C) is incorrect because spermatogenesis is initiated at puberty, whereas oogenesis is initiated during the embryonic development stage. Statement (D) is correct because a large number of primary follicles degenerate during the phase from birth to puberty, a process known as follicular atresia.