Question

Why is cholestogamous flower invariably autogamous?

Answer 1

(a) Cleistogamous flowers are invariably autogamous as there is no chance of cross-pollen landing on the stigma. Cleistogamous flowers produce assured seed-set even in absence of pollinators.

E.g. of cleistogamous flowers are Viola (common pansy), Oxalis, Commelina, Arachis hypogea and Oryza sativa.

Answer 2

Explanation:

Answer: (a)The pollination that occurs in opened flowers is called chasmogamy. ... When anthers dehisces in the flower buds, pollen grains come in contact with the stigma for effective pollination. Thus, these flowers are invariably autogamous as there is no chance of cross-pollen landing on the stigma.