What is the triple fusion?

Explanation

### Step-by-Step Solution:

1. **Understanding Double Fertilization**:
- Double fertilization is a unique process that occurs in flowering plants (angiosperms). It involves the fusion of one female gamete (egg) with two male gametes (sperm).

2. **Components Involved**:
- In double fertilization, one male gamete fuses with the egg cell to form a zygote.
- The second male gamete fuses with two polar nuclei located in the central cell of the ovule.
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