In which of the following plants are autogamy and geitonogamy prevented?

...... prevents both autogamy and geitonogamy.

Which process is not prevented in maize?

Which of the following mechanisms prevents self-pollination?

In which of the following are both autogamy and geitonogamy prevented?

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.