Plant Kingdom Question 488

Question: Which of the following structures in Pinus are haploid?

Options:

A) Megaspore, integument, root

B) Endosperm, megaspore, pollen grain

C) Pollen grain, leaf, root

D) Megaspore, endosperm, embryo

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Because endosperm is haploid (n) and formed before fertilisation and megaspore mother cell divides reductionally to form a linear tetrad of haploid megaspores and microspore (= pollen grain), is the first stage of the gametophyte (n).