NEET 2008 Biology question

Unisexuality of flowers prevents

(1)Autogamy and geitonogamy
(2)Autogamy, but not geitonogamyCorrect
(3)Both geitonogamy and xenogamy
(4)Geitonogamy, but not xenogamy

Answer: (2)

Solution

A unisexual flower has either stamens or carpels, so self-pollination within the same flower (autogamy) is impossible. However, a monoecious plant carries both male and female flowers, and pollen can be transferred from a male flower to a female flower of the same plant

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Question ID VK-090097