Question

What is self-incompatibility? Why does self-pollination not lead to seed
formation in self-incompatible species?


NCERT Class XII
Biology - Main Course Book

Chapter 2. Sexual Reproduction in Flowering Plants

Answer 1

Because they have certain methods that prevent self fertilization like pollens and ovum mature at different times 

Answer 2

Answer:

Self-incompatibility refers to a genetically controlled mechanism that prevents self-pollination and promote cross-pollination in flowers.Self-pollination cannot lead to the formation of seeds in a self-incompatible species. This happens because the pollens are unable to fertilize the ovules that would develop into an embryo and hence form seeds.