Which of the following conditions will ensure autogamy?

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Presence of unisexual flowers of different plants of same species

Presence of unisexual flowers on the same plant

Presence of chasmogamous bisexual flowers with dichogamous condition

Presence of closed bisexual flowers in a plant

answer is D.

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Detailed Solution

In cleistogamous flowers which do not open at all, the anthers and stigma lie close to each other. When anthers dehisce in the flower buds, pollen grains come in contact with the stigma to effect pollination. Thus, cleistogamous flowers are invariably autogamous as there is no chance of cross-pollen landing on the stigma.

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Best Online Course for NEET

Best Online Course for CBSE