Which one of the following characteristics promotes cross-pollination?

Which of the following prevents inbreeding?

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.

Does self-incompatibility impose any restrictions on autogamy? Give reasons and suggest the method of pollination in such plants.

Which one of the following usually does $NOT$ promote self-pollination?

In papaya,male and female flowers are present on different plants. This condition permits: