Define microphytes.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Term**: The term "microphytes" refers to a specific group of organisms.

2. **Defining Microphytes**: Microphytes are microscopic organisms that are capable of photosynthesis, which means they can produce their own food through the process of converting sunlight into energy.

3. **Autotrophic Mode of Nutrition**: The mode of nutrition in microphytes is autotrophic, indicating that they synthesize their own organic compounds from inorganic substances.

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