Monoecious plants with unisexual flowers will prevent $:$

Which one of the following favours herkogamy for cross-pollination?

Given below are two statements.
Statement $I$: Self-incompatibility is a device that prevents outbreeding.
Statement $II$: Self-incompatibility is a genetic mechanism due to which germination of pollen on the stigma of the same flower is inhibited.
In the light of the above two statements,choose the correct answer from the options given below.

List three strategies that a bisexual chasmogamous flower can evolve to prevent self-pollination (autogamy).

$A$ dioecious flowering plant prevents both:

What is the benefit of outbreeding devices to plants?