Question

Central cell of embryo sac contains

• A. A single haploid nucleus
• B. Two haploid polar nuclei
• C. One diploid fusion or secondary nucleus
• D. Either B or C

Answer 1

The correct option is D Either B or C

Central cell is present in the centre of the embryo sac. It contains two polar nuclei which are haploid. However, before fertilisation, nuclei of central cell become fused and form a diploid nucleus which is called secondary nucleus.

Thus, central cell may have two haploid polar nuclei or a diploid secondary nucleus. Hence both options B and C are correct.

So, the correct answer is D.