Explain the difference between self-pollination and cross-pollination.

Explanation

### Step-by-Step Solution:

1. **Definition of Self-Pollination**:
- Self-pollination occurs when pollen from the anther of a flower fertilizes the stigma of the same flower. This means that the reproductive cells come from the same plant.

2. **Example of Self-Pollination**:
- For example, in a flower like a pea plant, the pollen produced by the anthers can fall onto the stigma of the same flower, leading to fertilization without the involvement of another flower.

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