How many male gametes does each pollen grain contains?

Explanation

To answer the question of how many male gametes each pollen grain contains, we can break down the information step by step:

### Step-by-Step Solution:

1. **Understanding Pollen Grain Structure**:
- Each pollen grain is composed of two types of cells: a vegetative (or tube) cell and a generative (or reproductive) cell.

2. **Role of the Vegetative Cell**:
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