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In which one of the following pollination is autogamous?

1. Geitonogamy
2. Xenogamy
3. Chasmogamy
4. Cleistogamy

Correct answer: Cleistogamy

Solution

Cleistogamous flowers do not open, so pollen is transferred to the stigma of the same flower. That makes the pollination autogamous (self-pollination within one flower).

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