Question

Describe the structure of a typical monosporic embryo sac found in flowering plants

Answer 1

The single functional mother cell gives rise to female gametophyte or the embryo sac. Since only one cell is involved out of four it is called monosporic embryo sac. It divides to form a 8 nucleate and 7 celled embryo sac. the 8 cells that are present are 3 cells that are 1 egg cell and 2 synergids are present at the micropylar end. the synergids and the egg cell together form the egg aparatus. Synergids have a speial thickening called filiform apparatus which helps guide the pollen tube in the ovary. Cells are present at the chalazal end and are called antipodal cells. Three cells are present in the central space and are called polar nuclei.

Answer 2

Answer:

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