Question

whai 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

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.