How many sperms are formed from a secondary spermatocyte?[1990]a)4b)8c)2d)1Correct answer is option 'C'. Can you explain this answer?

Question

Answer

Each primery spermatocyte gives two secondary spermatocyte by meiosis, and each secondary spermatocyte gives  only two spermatid.....it should be C

Answer

A single primary spermatocyte produced 4 sperm and a primary spermatocyte produced two secondary spermatocyte by meiosis 1 and a sec. spermatocyte  produced 2 sperm by meiosis.

Answer

Answer

Refer the diagram given on NCERT

Answer

The correct answer is option 'C', which is 4 sperms.

Explanation:
During spermatogenesis, the process by which sperm cells are produced, primary spermatocytes undergo meiosis I to produce two secondary spermatocytes. Each secondary spermatocyte then undergoes meiosis II to produce two spermatids. These spermatids will then further differentiate and mature into sperm cells.

Let's break down the process step by step:

1. Meiosis I: Primary spermatocytes undergo meiosis I, which results in the formation of two secondary spermatocytes. Meiosis I is a reduction division, where the chromosome number is halved.

2. Meiosis II: Each secondary spermatocyte then undergoes meiosis II, resulting in the formation of four haploid spermatids. Meiosis II is similar to mitosis but with a halved chromosome number.

3. Spermiogenesis: The four spermatids produced from meiosis II will then undergo spermiogenesis, a process of differentiation and maturation. During spermiogenesis, the spermatids undergo extensive structural changes to develop into mature sperm cells.

4. Sperm formation: The final result of spermatogenesis is the production of four mature sperm cells from each primary spermatocyte. These sperm cells are haploid and genetically distinct from each other due to the process of recombination and independent assortment during meiosis.

Therefore, the correct answer is 4 sperms (option 'C').

Answer

A

Answer

A single Secondary spermatocyte produces two sperms So the answer should be two.

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