A. Heterospory is found in all members of pteropsida
B. Selaginella is advance among pteridophytes as it produces seeds
C. Pinus leaves are monomorphic , pinnate compound and have sunken stomata as adaptation transpiration
D. Sporic meiosis is characteristic of life cycle in many organisms like Volvox , Chlamydomonas and Ulothrix .

Options

A. All are incorrect
B. Both B and C are correct
C. Only B is correct
D. Only D is incorrect

Answer

To solve the question, we need to evaluate the four statements provided about plant biology, specifically focusing on pteridophytes and gymnosperms. Let's analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement A: Heterospory is found in all members of pteropsida.**
- **Analysis:** Pteropsida includes pteridophytes, which generally exhibit two types of spore production: homosporous (same-sized spores) and heterosporous (different-sized spores). Heterospory is not found in all members of pteropsida; it is primarily seen in two genera: Selaginella and Salvinia. Therefore, this statement is **incorrect**.

2. **Statement B: Selaginella is advanced among pteridophytes as it produces seeds.**
- **Analysis:** Selaginella is indeed heterosporous, but it does not produce seeds. Seed production is a characteristic of gymnosperms and angiosperms, not pteridophytes. Selaginella is considered a precursor to seed plants, but it does not produce seeds itself. Hence, this statement is **incorrect**.

3. **Statement C: Pinus leaves are monomorphic, pinnate compound, and have sunken stomata as adaptation to transpiration.**
- **Analysis:** Pinus (a gymnosperm) has needle-like leaves that are adapted to reduce water loss. While it does have sunken stomata, the term "monomorphic" is incorrect because Pinus leaves are actually polymorphic, meaning they can vary in shape. Therefore, this statement is also **incorrect**.

4. **Statement D: Sporic meiosis is characteristic of the life cycle in many organisms like Volvox, Chlamydomonas, and Ulothrix.**
- **Analysis:** The organisms mentioned (Volvox, Chlamydomonas, and Ulothrix) primarily exhibit zygotic meiosis rather than sporic meiosis. In zygotic meiosis, the zygote undergoes meiosis to produce haploid spores, while sporic meiosis involves the alternation of generations with both haploid and diploid stages. Thus, this statement is **incorrect**.

### Conclusion:
All four statements (A, B, C, and D) are incorrect.

### Final Answer:
**All statements are incorrect.**

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