What are chasmogamous flowers? Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.

Explanation

Chasmogamous flowers are the open flower similar to the flower of other species, with exposed anthers and stigma. They favour cross-pollination e.g., Rose, Cleistogamous flowers are intersexual. They remain closed causing self-pollination. They appear late in the flowering season, to ensure pollination e.g., Commeline bengalensis, Balsam, Oxalis, Viola. Cross-pollination cannot take place in these flowers, as they never open and remain closed.