Question

Cross-pollination is favoured by:

Options

• self-sterility

• dichogamy

• herkogamy and heterostyly

• all of the above

Answer 1

All of the above

Explanation:

Cross-pollination is favored by self-sterility (which prevents pollen from the same flower from fertilizing), dichogamy (where pollen and stigma mature at different times), herkogamy (physical separation of anthers and stigmas), and heterostyly (presence of different style lengths), all of which reduce self-pollination and promote genetic variation through cross-pollination.