Double fertilization occurs when two sperm cells fertilize the two polar nuclei. the sperm and tube nuclei fertilize the egg. the polar nuclei fuse with the egg after it has fused with the sperm. one sperm fuses with the egg and the other sperm fuses with both polar nuclei.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.

answer; somatic;