Question

What is the cell number of the mature female gametophyte (embryo sac) in angiosperms?

Options

• 3-celled

• 5-celled

• 7-celled

• 9-celled

Answer 1

The mature female gametophyte, or embryo sac, is 7-celled. These cells include the egg apparatus (1 egg cell and 2 synergids at the micropylar end) and three antipodal cells at the chalazal end, with two polar nuclei in the center.