The arrangement of the nuclei in a normal embryo sac in the dicot plants is

Options

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

Answer

A

Explanation

In angiosperms (dicots), the Polygonum type of embryo sac is most common. In this embryo sac, 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).