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NEETZoologyHuman Reproduction

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The ovum released during ovulation is surrounded by the corona radiata. Reason (R): Corona radiata is an inner non-cellular layer secreted by the oocyte. In the light of the above statements, choose the most appropriate answer from the options given below:

Options

  1. AAssertion (A) is true but Reason (R) is false.
  2. BBoth Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
  3. CBoth Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
  4. DAssertion (A) is false but Reason (R) is true.

Correct answer

A. Assertion (A) is true but Reason (R) is false.

Step-by-step solution

The Assertion (A) is true because at the time of ovulation, the secondary oocyte (ovum) is released from the Graafian follicle along with its surrounding layers, which include the zona pellucida and the corona radiata. The Reason (R) is false because the corona radiata is an outer, cellular layer formed by the follicular (granulosa) cells. The inner, non-cellular (acellular) layer secreted by the oocyte is actually the zona pellucida. Therefore, Assertion (A) is true but Reason (R) is false. Answer: Assertion (A) i

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