Differentiate between chasmogamous flower and cleistogamous flower?

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Solution

Chasmogamous flower Cleistogamous flower

Flowers generally opens at maturity, exposing their stamens and style to facilitate fertilisation Flowers that do not open and stay closed

Mostly cross pollination take place in such flowers and autogamy is rare. Autogamous, as there is no chance of cross pollination

Flowers are larger and showier to promote cross pollination Flowers are rather small

Petals of chasmogamous flowers are large, attractive and colourful These flowers generally lack petals

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

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Chasmogamous flower	Cleistogamous flower
Flowers generally opens at maturity, exposing their stamens and style to facilitate fertilisation	Flowers that do not open and stay closed
Mostly cross pollination take place in such flowers and autogamy is rare.	Autogamous, as there is no chance of cross pollination
Flowers are larger and showier to promote cross pollination	Flowers are rather small
Petals of chasmogamous flowers are large, attractive and colourful	These flowers generally lack petals