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Q.

Which one of the following statements is correct?

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a

Xenogamy occurs only by wind pollination

b

Chasmogamous flowers do not open at all

c

Cleistogamous flowers are always autogamous

d

Geitonogamy involves the pollen and stigma of flowers of different plants

answer is A.

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Detailed Solution

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Cleistogamous flowers are always autogamous as they are bisexual and not opened.

(2) Xenogamy may take place with the help of water, animals and wind. Xenogamy is pollination between the flowers of two different plants belonging to the same species.

(3) Chasmogamous flowers are always opened upon their complete development and maturation.

(4) Geitonogamy involves pollen and stigma of different flowers of same plant.

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Which one of the following statements is correct?