Plants are producers.

Explanation

**Step-by-Step Solution:**

1. **Definition of Producers**: Producers are organisms that can make their own food through processes like photosynthesis. They are also known as autotrophs.

2. **Classification of Plants**: Plants are classified as eukaryotes, which are multicellular organisms. This means they have complex cells with a defined nucleus.

3. **Presence of Chloroplasts**: Plants contain chloroplasts, which are specialized organelles that play a crucial role in photosynthesis.

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