Differentiate between an annual and a biennial plant. Provide one example of each.

Explanation

### Step-by-Step Solution:

1. **Definition of Annual Plants**:
- Annual plants are those that complete their entire life cycle within one year. This includes germination, growth, flowering, seed production, and death all occurring in the same year.

**Example**: Watermelon (Citrullus lanatus) is a common example of an annual plant.

2. **Definition of Biennial Plants**:
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