Question

Assertion: The largest cell of the embryo sac is the central cell.

Reason: It consists of a fused nuclei.

• A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
• B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
• C. If the assertion is true but the reason is false
• D. If both the assertion and reason are false

Answer 1

The correct option is B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

The correct option is B.

Explanation for he correct option:

Assertion:

1. The central cell is the largest cell of the embryo sac.
2. It has a highly vacuolate cytoplasm which is rich in reserve food and Golgi bodies.

Reason:

1. In the middle, the cell contains two polar nuclei which have large nucleoli.
2. The polar nuclei fuse to form a single diploid secondary or fusion nucleus.

Final answer: If both the assertion and reason are true but the reason is not a correct explanation of the assertion.