Mention one significant difference between autogamy and geitonogamy.

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Autogamy**: Autogamy is a type of self-pollination where the pollen grains from the anther of a flower fertilize the ovule of the same flower. This means that the fertilization occurs within a single flower.

2. **Definition of Geitonogamy**: Geitonogamy is another form of self-pollination, but it involves the transfer of pollen from one flower to the stigma of another flower on the same plant. In this case, the fertilization occurs between two different flowers of the same plant.

3. **Significant Difference**: The significant difference between autogamy and geitonogamy lies in the location of the fertilization:
- In autogamy, fertilization occurs within the same flower.
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