What is the function of the two male gametes produced by each pollen grain in angiosperms.

Explanation

**Step-by-Step Solution:**

1. **Understanding Pollen Grains**: In angiosperms (flowering plants), pollen grains are the male gametophytes that produce male gametes (sperm cells).

2. **Production of Male Gametes**: Each pollen grain produces two male gametes during the process of microgametogenesis.

3. **Function of the First Male Gamete**:
- The first male gamete fuses with the egg cell (female gamete) during fertilization.
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