Plant Kingdom Question 259
Question: Which of the following structures in Pinus are haploid [CBSE PMT 1989; MP PMT 2002]
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:
Because endosperm is haploid (n) and formed before fertilization and megaspore mother cell divides reductionally to form a linear tetrad of haploid megaspores and microspore ( = pollengrain) is the first stage of the gametophyte (n).
BETA
