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Plant Reproduction
Angiosperms are a group of plants that reproduce using flowers. To develop the egg cell for fertilization it begins in an ovule of the ovary. The ovule contains a central cell surrounded by a protective layer of other cells. The central cell undergoes meiosis and forms four haploid spores. Only one of the four is used and the other three degenerate. The one divides mitotically to form two cells - one has two haploid nuclei and the other is the egg. This group of cells is known as the embryo sac and is the beginning of a seed ready for fertilization.
 
 
What is the name of the group of cells that forms when the central cell divides mitotically?
A. ovule
B. endosperm
C. embryo sac
D. pollen tube

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