Which of the following statement is correct regarding spermatophyte?

Options

A. Gymnosperms are homosporous.
B. Microspore which develops into male gametophyte is highly reduced.
C. The development of pollen grains occurs in megaspo- rangia.
D. The male and female cones are borne on same tree in Cycas.

Answer

To determine which statement regarding spermatophytes is correct, let's analyze each statement step by step.

### Step-by-Step Solution:

1. **Understanding Spermatophytes**:
- Spermatophytes, also known as seed plants, include gymnosperms and angiosperms. They reproduce through seeds and have specialized structures for reproduction.

2. **Analyzing the Statements**:
- **Statement 1**: "Gymnosperms are homosporous."
- **Analysis**: This statement is incorrect. Gymnosperms are heterosporous, meaning they produce two types of spores: microspores (male) and megaspores (female).

- **Statement 2**: "Microspore which develops into male gametophyte is highly reduced."
- **Analysis**: This statement is correct. The microspore develops into a male gametophyte, which is indeed highly reduced in size compared to the gametophytes of non-seed plants.

- **Statement 3**: "The development of pollen grain occurs in megasporangium."
- **Analysis**: This statement is incorrect. Pollen grains develop in microsporangia, not megasporangia.

- **Statement 4**: "Male and female cones are born on the same tree in Cyprus."
- **Analysis**: This statement is also incorrect. In many species of Cycas (a type of gymnosperm), male and female cones are found on separate trees, indicating dioecy.

3. **Conclusion**:
- The only correct statement regarding spermatophytes is **Statement 2**: "Microspore which develops into male gametophyte is highly reduced."

### Final Answer:
The correct statement regarding spermatophytes is that the microspore which develops into male gametophyte is highly reduced.

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