Question
Biology Question on Pre-Fertilisation: Structures And Events
Larger nucleus in a pollen grain is
A
tube nucleus
B
sperm nucleus
C
generativenucleus
D
none of these
Answer
tube nucleus
Explanation
Solution
Pollen grain is the mother cell of male gametophyte. Development of male gametophyte begins inside the microsporangium. The microspore nucleus divide mitotically to form a smaller generative cells and a much larger vegetative cells called tube cells.