As a Flower Develops, Which Transition is Most Likely to Occur

Question

As a flower develops, which transition is most likely to occur?
A) The microspores become pollen grains.
B) The ovule becomes a fruit.
C) The petals are retained.
D) The vegetative nucleus becomes a sperm nucleus.
E) The ovules become ovaries.

Accepted Answer

The microspores develop into pollen grains during the process of microsporogenesis in the anthers of a flower. This is a common and important transition in plant reproduction.

Note: Choices B, C, D, and E are all incorrect as they do not involve a likely transition that occurs during flower development. The ovule can become a fruit, but typically only after fertilization occurs. Petals may fall off or be lost, but they are not retained throughout the entire development process. The vegetative nucleus may give rise to sperm nuclei, but this occurs inside the pollen grain, not in the flower itself. Ovules do not become ovaries, but rather, ovaries produce and contain ovules.