What is heterospory? Briefly comment on its significance. Give two examples.

Explanation

**Step-by-Step Solution:**

1. **Definition of Heterospory:**
- Heterospory is a reproductive condition in which a single plant produces two distinct types of spores. These spores differ in size and function.

2. **Types of Spores:**
- The two types of spores produced are:
- **Microspores:** These are the smaller spores that develop into male gametophytes.
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