Go through the following statements:-
(i). Primary spermatocytes undergo mitotic divisions to produce secondary spermatocytes
(ii). Sperms released from the seminiferous tubules are fuly mature and motile
(iii) The head of sperm possesses may mitochondria which produce energy for the movement of tail
(iv) The human male ejaculates about 20-30 million sperms during a coitus
which of these are correct?

Options

A. (a) (i), (ii) & (iii)
B. (b) (ii), (iii) & (iv)
C. (c) (i), (iii) & (iv)
D. (d) All are wrong

Explanation

To determine which statements are correct regarding human reproduction, let's analyze each statement step by step.

**Step 1: Analyze Statement (i)**
- Statement: "Primary spermatocytes undergo mitotic divisions to produce secondary spermatocytes."
- Analysis: This statement is false. Primary spermatocytes are diploid cells that undergo meiosis (not mitosis) to produce secondary spermatocytes, which are haploid.

**Step 2: Analyze Statement (ii)**
- Statement: "Sperms released from the seminiferous tubules are fully mature and motile."
- Analysis: This statement is also false. While sperms are produced in the seminiferous tubules, they are not fully mature or motile until they pass through the epididymis and enter the female reproductive tract.

**Step 3: Analyze Statement (iii)**
- Statement: "The head of sperm possesses many mitochondria which produce energy for the movement of tail."
- Analysis: This statement is incorrect. The head of the sperm contains the nucleus with genetic material, while the mitochondria are located in the midpiece of the sperm, which provides the energy necessary for the movement of the tail.

**Step 4: Analyze Statement (iv)**
- Statement: "The human male ejaculates about 20-30 million sperms during a coitus."
- Analysis: This statement is false. A typical human male ejaculates approximately 200-300 million sperms during ejaculation, which is significantly higher than the stated range.

**Conclusion:**
All four statements are incorrect. Therefore, the correct answer is that none of the statements are correct.

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