In castor and maize plants, . . . . . .

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(B) In castor and maize plants,both male and female flowers are present on the same plant (monoecious condition).Since the flowers are unisexual,self-

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autogamy is prevented but not geitonogamy

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(B) In castor and maize plants,both male and female flowers are present on the same plant (monoecious condition).Since the flowers are unisexual,self-pollination within the same flower (autogamy) is prevented.However,pollen grains can be transferred from the anther of one flower to the stigma of another flower on the same plant,which is known as geitonogamy.Therefore,autogamy is prevented but geitonogamy is not.

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