Make a list of any three outbreeding devices that flowering plants have developed and explain how they halp to encourage cross-pollination.

Explanation

### Step-by-Step Solution:

1. **Introduction to Pollination**:
- Pollination is the process where pollen grains (male gametes) are transferred to the stigma of a flower, leading to fertilization when the pollen grain germinates and forms a pollen tube that reaches the ovum (egg cell).
- There are two main types of pollination: self-pollination and cross-pollination.

2. **Importance of Cross-Pollination**:
- Cross-pollination is essential as it promotes genetic diversity, which helps prevent inbreeding depression that can occur with continuous self-pollination.
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