NEET 2011 Biology question

In which one of the following pollination is autogamous ?

(1)Geitonogamy
(2)Xenogamy
(3)Chasmogamy
(4)CleistogamyCorrect

Answer: (4)

Solution

Autogamy is the transfer of pollen from the anther to the stigma of the same flower. Cleistogamous flowers never open (e.g. Viola, Oxalis, Commelina), so pollination and fertilisation occur within the closed flower and autogamy is obligatory.

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Question ID VK-090849