Question

Which one is found in pollen grain?

• A. Two male gametes
• B. Two vegetative cells and one generative cell
• C. One generative cell and one tube cell
• D. One tube cell and one male gamete

Hint:

A pollen grain is typically two-celled: one tube cell and one generative cell. The generative cell later forms two male gametes for double fertilization.

Answer 1

The Correct Option is C

Step 1: Structure of pollen grain.
A mature pollen grain in angiosperms is generally two-celled, consisting of: 1. One large vegetative (tube) cell. 2. One small generative cell.

Step 2: Role of the cells.
- The tube cell develops into the pollen tube during fertilization.
- The generative cell divides mitotically to form two male gametes, which take part in double fertilization.

Step 3: Analysis of options.
- (A) Two male gametes: Found only after the generative cell divides, not in the pollen grain initially.
- (B) Two vegetative cells and one generative cell: Incorrect, only one vegetative (tube) cell is present.
- (C) One generative cell and one tube cell: Correct, this is the structure of a pollen grain.
- (D) One tube cell and one male gamete: Incorrect, as the generative cell produces two male gametes later.

Step 4: Conclusion.
The correct answer is (C) One generative cell and one tube cell.