Name the following :
Fusion of male gamete with two polar nuclei.

Explanation

### Step-by-Step Solution:

1. **Understanding the Terms**: The question asks for the name of a specific biological process involving the fusion of a male gamete with two polar nuclei.

2. **Identifying the Process**: In flowering plants, there is a process called double fertilization. This process includes two key fusions:
- The first fusion is between one male gamete (sperm) and the egg cell, resulting in the formation of a zygote.
- The second fusion involves another male gamete fusing with two polar nuclei.

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