Explain self-pollination in cleistogamous flowers.

(N/A) Cleistogamous flowers are those that do not open at all. In such flowers,the anthers and stigmas lie very close to each other. When anthers dehisce in the flower buds,pollen grains come in contact with the stigma to effect pollination. Thus,cleistogamous flowers produce assured seed-set even in the absence of pollinators,as there is no chance of cross-pollination.