Question

What is meant by monosporic development of female gametophyte?

Hint:

The mature angiosperm embryo sac is "7-celled but 8-nucleate" because the large central cell contains two polar nuclei.

Answer 1

In a majority of flowering plants, out of the four megaspores formed after meiosis, three degenerate and only one remains functional. This single functional megaspore develops into the female gametophyte (embryo sac). This method of embryo sac formation from a single megaspore is termed monosporic development.