Question

What is Cleistogamy ?

Answer 1

Cleistogamy: Is the self pollination occurring in an unopened flower.Self-pollination in this case is the transfer of pollen grains from anther to the stigma of the same flower which is unopened.


 Advantages:
* This type self-pollination does not require external agent.
* It preserves useful characters of the parent individual.
* It helps in producing pure lines.  


Disadvantages:
* This self-pollination does not help in producing new varieties and species

Answer 2

Hi here is your answer

Cleistogamy is a type of automatic self pollination in the plants.
This type of pollination is seen in plants of peanuts, pansy etc
However the genius of this is Viola

Hope it helped!
Good night