Question

What is chasmogamous flowers and chliestomogamous flowers and difference between them

Answer 1

hello friend
chasmogamous flower :
1- flower generally open at maturity 
2- cross pollination takes place
3- flowers are larger 
4- petals are large, colourful and attractive..

cleistogamous flower:
1- flowers do not open they stay closed
2- autogamous, as there is no chance of cross pollination
3- flowers are small
4- these flowers generally lack petals..

Cleistogamous: These flowers remains closed throughout their life 
Chasmogamous flowers are those which are exposed to air and both self and cross pollination can take place here.

hope it helps u =)

Answer 2

Answer:

In chasmogamous flowers anther and stigma grow closer to ensure self pollination...

cleistogamous flowers are bisexual and remains close causing self pollination..