Question

The embryo sac of angiosperms is made up of ___

• A. 8 cells with 7 nuclei
• B. 7 cells with 8 nuclei
• C. 6 cells with 12 nuclei
• D. 7 cells with 6 nuclei

Answer 1

The correct option is B

7 cells with 8 nuclei

The female gametophyte or embryo sac of an angiosperm has 7 cells and 8 nuclei. The megaspore mother cell undergoes mitosis to form two nuclei which migrate to opposite poles, forming a 2-nucleate embryo sac. Further mitotic divisions lead to the formation of 4-nucleate followed by 8-nucleate stages of the embryo sac. In these mitotic divisions, nuclear division is not followed by cell division.