Target Exam

CUET

Subject

Biology

Chapter

Sexual Reproduction in Flowering Plants

Question:

Assertion:  Cleistogamous flowers produce assured seed sets in the absence of pollinators.
Reason: Cleistogamous flowers have exposed anthers and stigma.

Options:

Assertion (A) and reason (R) are true and reason(R) is the correct explanation of assertion.

Assertion (A) and reason (R) are true but reason(R) is not the correct explanation of assertion.

Assertion is true but reason is false.

Assertion is false but reason is true .

Correct Answer:

Assertion is true but reason is false.

Explanation:

The correct answer is Option (3) - Assertion is true but reason is false.

Cleistogamous flowers are self-pollinating and do not open, so they do not rely on external pollinators to set seeds.This means that the pollen from the anthers is transferred to the stigma of the same flower, without the help of pollinators. This ensures that the flowers will produce seeds, even in the absence of pollinators.

The reason given is false because cleistogamous flowers do not have exposed anthers and stigma. The anthers and stigma are enclosed within the flower, so they are not exposed to the environment. This helps to protect the pollen and stigma from being damaged by insects or other factors.

Therefore, the correct reason for why cleistogamous flowers produce assured seed sets in the absence of pollinators is that they are self-pollinated.