Heterospory is found in

Options

A. Funaria
B. Dryopteris
C. Marchantia
D. Selaginella.

Answer

To solve the question "Heterospory is found in," we will analyze each of the given options step by step.

### Step-by-Step Solution:

1. **Understanding Heterospory**:
- Heterospory refers to the production of two distinct types of spores: microspores (smaller) and megaspores (larger). This is an important reproductive strategy in certain plant groups.

2. **Analyzing the Options**:
- **Option 1: Funaria**:
- Funaria is a type of moss and belongs to the division Bryophyta.
- Mosses, including Funaria, produce only one type of spore, known as homospores.
- Therefore, Funaria does not exhibit heterospory.

3. **Option 2: Dryopteris**:
- Dryopteris is a genus of ferns that falls under the division Pteridophyta.
- Similar to Funaria, Dryopteris also produces only homospores.
- Thus, Dryopteris does not demonstrate heterospory.

4. **Option 3: Mercantia**:
- Mercantia is a type of liverwort, also classified under Bryophyta.
- Like the previous options, Mercantia produces only homospores.
- Therefore, Mercantia is not the correct answer either.

5. **Option 4: Selaginella**:
- Selaginella is commonly referred to as club moss and is classified under the division Pteridophyta.
- Unlike the previous options, Selaginella exhibits heterospory, producing both microspores and megaspores.
- Microspores develop into male gametophytes, while megaspores develop into female gametophytes.

6. **Conclusion**:
- Based on the analysis, the correct answer to the question "Heterospory is found in" is **Selaginella**.

### Final Answer:
Heterospory is found in **Selaginella**.

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