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 Text Solution

**Step 1: Introduction to Outbreeding Devices**
Outbreeding devices are mechanisms that flowering plants have developed to promote cross-pollination and avoid self-pollination. This is important because self-pollination can lead to inbreeding depression, which reduces genetic diversity and the potential for beneficial traits in the progeny.

**Step 2: List of Three Outbreeding Devices**
1. **Receptivity of Stigma**
2. **Self-Incompatibility**
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