Question

Which one of the following statements is correct regarding pollination?

• A. Xenogamy occurs only by wind pollination
• B. Cleistogamous flowers are always autogamous
• C. Geitonogamy involves the pollen and stigma of flowers of different plants
• D. Chasmogamous flowers do not open at all

Answer 1

The correct option is B

Cleistogamous flowers are always autogamous

The correct option is B.

Explanation for correct option:

1. Few flowers remain close together to avoid cross-pollination this type of pollination is known as autogamous pollination.
2. Because cleistogamous flowers do not open at all, they exhibit exclusive autogamy or pollination within the same flower.

Explanation for incorrect options:

Option A :

Cross-pollination between flowers of different plants is referred to as xenogamy.

Option C :

The pollen and stigma of different flowers of the same plant are involved in geitonogamy.

Option D :

Anthers and stigma have been disclosed in chasmogamous flowers.

Final Answer: The correct statement about pollination is “Cleistogamous flowers are always autogamous”.