Question

Arrangement of nuclei in a normal dicot embryo sac is

• A. 3 + 3 + 2
• B. 2 + 4 + 2
• C. 3 + 2 + 3
• D. 3 + 3 + 3

Answer 1

The correct option is C 3 + 2 + 3

In angiosperms (dicots), the polygonum type of embryosac is most common. In this embryosac, the arrangement of the nuclei is 3+2+3, i.e., 3 in antipodal cells, 2 as polar nuclei (which later fuse and form a diploid secondary nucleus) and 3 in egg apparatus (2 in synergids and 1 in egg cell).

Thus, the correct answer is option C.