A) 4 cells, one of which is an egg
B) 6 cells, one of which is an egg
C) 8 cells, one of which is an egg
D) None of the above
Correct Answer: D
Solution :
The female gametophyte, also called embryo sac is mostly a 7-celled structure. There is a large centeral cell with two polar nuclei, which later fuse to form secondary nucleus. The micropylar end of the central cell is occupied by the egg apparatus comprising an egg cell and 2 synergids and at chalazal end three antipodal cells are present, cells of the egg apparatus and the antipodal cells are uninucleate and haploid where as the central cell is binucleate or diploid.
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