Assertion : The nucleus of sperm fuses with the nucleus of ovum , before the formation of ootid .
Reason : Diploid nuclear status of organism is essential for its development .

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False .
D. If both Assertion & Reason are False.

Answer

To analyze the given assertion and reason, we can follow these steps:

### Step 1: Understand the Assertion
The assertion states that "The nucleus of sperm fuses with the nucleus of ovum, before the formation of ootid."

- **Analysis**: In human reproduction, fertilization occurs when the sperm cell penetrates the ovum, leading to the fusion of their nuclei. However, the formation of the ootid occurs after the secondary oocyte completes meiosis. Therefore, the assertion is incorrect because the fusion of the sperm and ovum nuclei occurs after the formation of the ootid.

### Step 2: Understand the Reason
The reason states that "Diploid nuclear status of organism is essential for its development."

- **Analysis**: While it is true that a diploid nuclear status (having two sets of chromosomes) is essential for the development of an organism, this statement does not directly support the assertion. The diploid state is achieved after the fusion of the sperm and ovum nuclei, which occurs after the formation of the ootid. Therefore, this reason is also incorrect in the context of the assertion.

### Step 3: Conclusion
Both the assertion and the reason are false.

### Final Answer
Both the assertion and the reason are incorrect. The correct option would be that both statements are false.

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