Female Gametophyte:
The female gametophyte refers to the structure in plants that produces the female gametes, or egg cells, which are necessary for sexual reproduction. In flowering plants, the female gametophyte is found within the ovule, which is located within the pistil of the flower.
Options:
A:
B:
C:
D:
Explanation:
The correct answer is B: Embryosac. Here's why:
- Embryo: The embryo is the early stage of development of a multicellular organism. It is formed after fertilization and is not the female gametophyte.
- Embryosac: The embryosac, also known as the megasporangium or the female gametophyte, is the structure within the ovule that produces the female gametes. It contains the egg cell and other cells necessary for fertilization.
- Endosperm: The endosperm is a nutrient-rich tissue that develops within the seed of a flowering plant after fertilization. It provides nourishment to the developing embryo, but it is not the female gametophyte.
- Pistil: The pistil is the female reproductive organ of a flower. It consists of the stigma, style, and ovary. While it is involved in the production and reception of the female gametes, it is not the female gametophyte itself.
Therefore, the correct answer is B: Embryosac, as it is the structure within the ovule that produces the female gametes in flowering plants.