The event that triggers fruit formation is the growth of a pollen tube through the carpel of a flower.Which of the following would be a reasonable hypothesis about the basis of this effect?

Question

Quizplus · Accepted Answer

Auxins and gibberellins are hormones that are involved in plant growth and development. It is reasonable to hypothesize that the growing pollen tube produces these hormones as it grows through the carpel, triggering fruit formation. Ethylene and abscisic acid are also involved in plant growth and development, but there is no evidence to suggest that they play a role in this particular process. There is also no known cytokinin produced by the carpel that could trigger fruit formation.

The Event That Triggers Fruit Formation Is the Growth of a Pollen