In which one of the following pollination is autogamous?

Options

(a) Geitonogamy
(b) Xenogamy
(c) Chasmogamy
(d) Cleistogamy

Correct Answer:

Cleistogamy

Explanation:

Cleistogamy is autogamous pollinatin. When pollination and fertilization occur in unopened flower bud, it is known as cleistogamy. It ensures self-pollination and prevents cross-pollination.