NEETZoologyHuman Reproduction
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): During spermatogenesis, 50 secondary spermatocytes will produce 100 spermatids. Reason (R): Each secondary spermatocyte undergoes a reductional division to produce two haploid spermatids. In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A).
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A).
- C(A) is true but (R) is false.
- D(A) is false but (R) is true.
Correct answer
C. (A) is true but (R) is false.
Step-by-step solution
Assertion (A) is true: Each secondary spermatocyte undergoes meiosis II to produce two spermatids. Therefore, 50 secondary spermatocytes will produce 50 2 = 100 spermatids. Reason (R) is false: Secondary spermatocytes are haploid cells that undergo the second meiotic division (meiosis II) to produce spermatids. Meiosis II is an equational division, not a reductional division. The reductional division (meiosis I) occurs when primary spermatocytes divide to form secondary spermatocytes. Answer: (A) is true but (R) is