Question

Which one of the following may require pollinators, but is genetically similar to autogamy?

• A. Cleistogamy
• B. Apogamy
• C. Xenogamy
• D. Geitonogamy

Answer 1

The correct option is D

Geitonogamy

The correct option is D.

Explanation for the correct option:

1. Geitonogamy is the process by which a pollinator moves pollen grains from the anther of one flower to the stigma of a different flower on the same plant.
2. Since the pollen grains come from the same plant, geitonogamy is genetically comparable to autogamy even though it involves cross-pollination using a pollinating agent.

Explanation for the incorrect options:

Option A:

1. The ability of some plants to reproduce through the use of non-opening, self-pollinating flower are known as cleistogamy or automatic self-pollination.
2. Peas, beans, and peanuts are particularly well recognized.

Option B:

1. Apogamy is an agamic technique for propagation in plants where the gametophyte creates from the sporophyte.

Option C:

1. Xenogamy is the exchange of pollen grains from the anther to the stigma of an alternate plant.
2. This is the main sort of cross-fertilization during which fertilization brings hereditarily various kinds of pollen grains to the stigma.

Final Answer: Geitonogamy requires pollinators but is genetically similar to autogamy.