Question
Explain any two devices by which autogamy is prevented in flowering plants.
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Answer
- Male and female flowers are present on different plants.
- The stamens and stigma of a bisexual flower mature at different times.
- Anthers mature earlier than the stigma and release pollens.
- The stigma matures earlier than the anther.
- Flowers are self-sterile or self-incompatible.
- Chasmogamous flowers are present with exposed stamens and stigma which facilitate cross-pollination.
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