Multiple choice

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

  1. 2 + 4 + 2

  2. 3 + 2 + 3

  3. 2 + 3 + 3

  4. 3 + 3 + 2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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

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