Question Detail
Question
Which of the following mechanisms favour cross-pollination?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Protogyny is a condition where the female reproductive parts (stigma) mature before the male parts (anthers) in a flower. This prevents self-pollination and promotes cross-pollination. Homogamy (both parts mature at same time) and monoecious (separate male/female flowers on same plant) can allow selfing. Cleistogamy (flowers that never open) forces self-pollination.
Hint
If the female parts are ready first, can the flower pollinate itself?