Which one of the statement is incorrect w.r.t. heterospory?

Options

A. It dévelops into dioecious gametophyte
B. It is the important stem in evolution because it is a precursor of seed habit
C. It develops into dioecious sporophyte
D. It is found in few pteridophyte, all gymnosperm and angiosperm

Answer

To determine which statement is incorrect with respect to heterospory, we need to analyze the provided statements about heterospory step by step.

### Step-by-Step Solution:

1. **Understanding Heterospory**:
- Heterospory refers to the production of two different types of spores: microspores (male) and megaspores (female). This condition is significant in the evolution of seed plants.

2. **Evaluating the Statements**:
- **Statement 1**: "Develops into dioecious gametophyte."
- This statement is correct. Dioecious plants have male and female gametophytes on separate individuals.

- **Statement 2**: "Important stem in evolution because it is a precursor of seed habit."
- This statement is also correct. Heterospory is indeed considered a precursor to the development of seeds, as it allows for the differentiation of male and female gametes.

- **Statement 3**: "Develops into a dioecious sporophyte."
- This statement is incorrect. In heterospory, the sporophyte generation does not develop into dioecious forms; rather, it is the gametophyte that can be dioecious. The sporophyte is typically diploid and does not exhibit the dioecious condition.

- **Statement 4**: "Found in a few pteridophytes, all gymnosperms, and angiosperms."
- This statement is correct. Heterospory is indeed found in some pteridophytes, as well as in all gymnosperms and angiosperms.

3. **Conclusion**:
- The incorrect statement regarding heterospory is the third one: "Develops into a dioecious sporophyte."

### Final Answer:
The incorrect statement with respect to heterospory is: "Develops into a dioecious sporophyte."