Which of the following is the first cell of the female gametophyte generation in angiosperms?

 

Question:   Which of the following is the first cell of the female gametophyte generation in angiosperms?

A   Zygote

B   Egg cell

C   Functional megaspore

D   Embryo sac

Answer:   Functional megaspore

 

Cells of female gametophyte generation Description
1 Functional Megaspore ·        The first cell of the female gametophyte generation in angiosperms.

·        It develops into the female gametophyte.

2 Mitotic Division 1 ·        The functional megaspore undergoes a mitotic division to form two nuclei.
3 Mitotic Division 2 ·        One of the nuclei moves to the other side of the cell, resulting in two nuclei separated by a large central vacuole.
4 Mitotic Division 3 ·        Each of the two nuclei divides, yielding a total of four nuclei in the cell.
5 Female Gametophyte ·        The cell contains the four nuclei two polar nuclei and two synergids.
6 Egg Cell ·        One of the nuclei in the female gametophyte becomes the egg cell, the female gamete involved in fertilization.
7 Central Cell ·        The other three nuclei in the female gametophyte form the central cell, which fuses with a sperm cell during fertilization.
8 Synergid Cells ·        These cells have a role in guiding pollen tubes during fertilization.
9 Antipodal Cells ·        These cells are often found at the opposite end of the female gametophyte and their exact function is less clear, but they may be involved in nourishment and support.