Question

A set of diploid structures is

• A. Pollen grain, Zygote, Endosperm
• B. Zygote, Polar nuclei, Megaspore mother cell
• C. Pollen grain, Endosperm, Embryo sac
• D. Megaspore mother cell, Polar nuclei, Embryo sac

Answer 1

Answer:

B. Zygote, Polar nuclei, Megaspore mother cell

• Nucellus is the central part of ovule and it is diploid 2n.

• Polar nuclei os present in the embryo and is haploid, two polar nuclei (n+n) and a male gamete (n) fuse to form endosperm which is triploid (3n).

• Megaspore mother cell is the precursor of the female gametophyte.

• MMC is 2n and undergoes meiosis to form haploid (n) female gametophyte.