Heterospory is found in some members of _____and all members of ____

Options

A. bryophyta,pteridophyta
B. Pteridophyta, Bryophyta
C. Bryophyta,Gymnospermae
D. Pteridophyta,Spermatophyta

Answer

### Step-by-Step Solution:

1. **Understanding Heterospory**:
- Heterospory refers to the production of two types of spores that differ in size and sex. This means that plants producing heterospores generate microspores (smaller, male spores) and megaspores (larger, female spores).

2. **Identifying Plant Groups**:
- In the plant kingdom, heterospory is observed in certain groups. The question asks for the groups where heterospory is found in some members and all members.

3. **Analyzing Pteridophyta**:
- Pteridophyta, which includes ferns and their relatives, exhibits heterospory in some of its members. For example, certain species of ferns produce both microspores and megaspores.

4. **Analyzing Spermatophyta**:
- Spermatophyta, also known as seed-producing plants, includes gymnosperms and angiosperms. All members of gymnosperms exhibit heterospory, as they produce both types of spores leading to seed formation.

5. **Conclusion**:
- Therefore, the answer to the question is that heterospory is found in some members of **Pteridophyta** and all members of **Spermatophyta** (specifically Gymnosperms).

### Final Answer:
Heterospory is found in some members of **Pteridophyta** and all members of **Spermatophyta**.

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