Question

what are the dvantages of self pollination​

Answer 1

Answer:

May lead to the weakening of variety or the species due to continued self-pollination, thereby affecting the quality of offspring

Defective or weaker characters of the variety or breed cannot be eliminated

Self-pollination does not yield new varieties, hence fewer chances of improvement in the subsequent generation

Answer 2

Advantages

The advantages of self-pollination are as follows: Much surer in bisexual flowers where stamens and carpels mature simultaneously. Indefinite preservation of parental characters. No wastage of pollen grains.

Disadvantages

May lead to the weakening of variety or the species due to continued self-pollination, thereby affecting the quality of offspring. Defective or weaker characters of the variety or breed cannot be eliminated. Self-pollination does not yield new varieties, hence fewer chances of improvement in the subsequent generation.