Select an incorrect statement for pteridophytes:

Options

A. Pteridophytes are used for medicinal purposes and as packing material for trans- shipment of living material
B. The leaves in pteridophyta are small or large
C. Free-living, mostly photosynthetic thalloid gametophytes is called prothallus.
D. Zygote produces a multicellular dominant phase of the pteridophytes

Answer

To determine the incorrect statement about pteridophytes, let's analyze each statement provided in the question step by step.

### Step-by-Step Solution:

1. **Understanding Pteridophytes**:
- Pteridophytes are vascular plants that reproduce via spores and do not produce seeds. They include ferns, horsetails, and clubmosses.

2. **Evaluating the Statements**:
- **Statement 1**: "Pteridophytes are used for medicinal purposes and as a packaging material for transshipment of living material."
- **Analysis**: While pteridophytes may have some medicinal uses, they are not typically used as packaging materials. The use of sphagnum moss (a bryophyte) for packaging is more common. Thus, this statement is likely incorrect.

- **Statement 2**: "The leaves in pteridophytes are small or large."
- **Analysis**: This statement is correct. Pteridophytes can have a variety of leaf sizes, from small to large, depending on the species.

- **Statement 3**: "The pre-leaving mostly photosynthetic thalloid gametophyte is called prothallus."
- **Analysis**: This statement is correct. The prothallus is indeed the gametophyte stage in pteridophytes, which is typically photosynthetic.

- **Statement 4**: "Zygote produces the multicellular dominant phase of the pteridophyte."
- **Analysis**: This statement is also correct. The zygote develops into the sporophyte, which is the dominant phase in the life cycle of pteridophytes.

3. **Conclusion**:
- After analyzing all the statements, the incorrect statement regarding pteridophytes is **Statement 1**.

### Final Answer:
The incorrect statement for pteridophytes is: **"Pteridophytes are used for medicinal purposes and as a packaging material for transshipment of living material."**

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