NEET · Biology · STD 12 - 2. human reproduction

Consider the following :
A. The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis.
B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females.
C. The first polar body is associated with the formation of the primary oocyte.
D. Luteinizing Hormone (LH) surge leads to disintegration of the endometrium and onset of menstrual bleeding.

Choose the correct answer from the options given below:

A \(A\) and \(B\) are true
B \(A\) and \(C\) are true
C \(B\) and \(D\) are true
D \(B\) and \(C\) are true

Verified Solution

Answer & Solution

Correct Answer

(A) \(A\) and \(B\) are true

Step-by-step Solution

Detailed explanation

Statements \(A\) and \(B\) are true while statements \(C\) and \(D\) are false.
The first polar body is associated with the formation of the secondary oocyte LH surge leads to ovulation. Decreased levels of progesterone during late luteal phase leads to degeneration of the endometrium and onset of menstrual bleeding.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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