Write the difference between calyx and corolla.

Explanation

### Step-by-Step Solution:

1. **Definition of Calyx**:
- The calyx is the outermost whorl of a flower, consisting of leaf-like structures known as sepals. It is typically green in color and serves as a protective layer for the developing flower bud.

2. **Function of Calyx**:
- The primary function of the calyx is to protect the flower bud before it opens. It shields the delicate parts of the flower from environmental factors and potential damage.

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