Question

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

Answer 1

Flowers that open at maturity to facilitate exposure of pollen and stigma for cross-pollination are referred to as chasmogamous flowers. They are large, colourful flowers with nectar/scent to attract pollinators. Cleistogamous flowers remain closed to avoid cross-pollination.