Why do organisms need to take food ? What are the two main modes of nutrition in organisms ?

Explanation

### Step-by-Step Solution

1. **Understanding the Need for Food:**
- Organisms need food to obtain essential nutrients such as proteins, vitamins, carbohydrates, fats, and minerals.
- These nutrients are crucial for providing energy, which is necessary for the proper functioning of the body and its metabolism.

2. **Functions of Food:**
- Food provides energy that allows organisms to perform various life processes, including growth, reproduction, and maintenance of bodily functions.
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