NEETZoologyHuman Reproduction
Read the following statements regarding spermatogenesis in human males: (a) Primary spermatocytes periodically undergo mitosis to maintain their numbers. (b) Secondary spermatocytes are haploid cells containing 23 chromosomes each. (c) Spermiogenesis involves the reductional division of spermatids to form spermatozoa. (d) Spermiation is the process of release of sperms from the epididymis. (e) After spermiogenesis, t
Options
- AOnly one
- BOnly two
- COnly three
- DOnly four
Correct answer
B. Only two
Step-by-step solution
Let us evaluate each statement based on the NCERT textbook: Statement (a) is incorrect. Spermatogonia undergo mitosis to maintain their numbers. Primary spermatocytes are the cells that periodically undergo meiosis. Statement (b) is correct. A primary spermatocyte completes the first meiotic division to form two equal, haploid cells called secondary spermatocytes, which have 23 chromosomes each. Statement (c) is incorrect. Spermiogenesis is the transformation or differentiation of spermatids into spermatozoa (sperm