Explain the main parts of a flower.

Explanation

To explain the main parts of a flower, we can break it down into four key components:

### Step-by-Step Solution:

1. **Calyx**:
- The calyx is the outermost part of the flower, made up of leaf-like structures called sepals.
- Its primary function is to protect the flower bud before it blooms. The sepals can be green or sometimes colored, and they help shield the developing flower from damage and desiccation.

...