What is photosynthesis ?

Explanation

### Step-by-Step Solution:

1. **Definition of Photosynthesis**:
Photosynthesis is a process used by plants (and some other organisms) to convert light energy into chemical energy.

2. **Role of Phototrophs**:
Organisms that perform photosynthesis are known as phototrophs. The term "photo" refers to light, indicating that these organisms require light to produce food.

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