(a) Write the fate of egg cell and polar nuclei after fertilization.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Components:**
- In angiosperms (flowering plants), the female gamete is the egg cell, and there are two polar nuclei present in the embryo sac.

2. **Fertilization Process:**
- When pollen grains land on the stigma of a flower, they germinate and form a pollen tube that grows toward the ovule.
- The pollen tube carries two male gametes (sperm cells) into the ovule.
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