Question

In the given diagram of pollen grain, identify the labels 'A' and 'B'

• A. A – Exine, B – Intine
• B. A – Intine, B – vegetative nucleus
• C. A – Intine, B – Generative nucleus
• D. A – Exine, B – Generative nucleus

Hint:

The inner wall layer is the intine, and the small cell inside has the generative nucleus.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept
A pollen grain has a two-layered wall and two cells inside.

Step 2: Label A
The outer wall is the tough exine and the inner thin layer is the intine. Arrow A points to the inner layer, so A is the intine.

Step 3: Label B
Inside, the large vegetative cell has a vegetative nucleus and the small generative cell has the generative nucleus. Arrow B marks the small cell's nucleus, so B is the generative nucleus.

Final Answer:
A is the intine and B is the generative nucleus. \[ \boxed{\text{(C) }\text{A -- Intine, B -- Generative nucleus}} \]