The gymnosperms are heterosporous, they produce

Options

A. dipoid microspores and megaspores
B. diploid microspores an dhapoid megaspores
C. haploid microspores and dipolid megaspores
D. haploid microspores and megaspores.

Answer

To answer the question "The gymnosperms are heterosporous, they produce," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Gymnosperms**:
- Gymnosperms are a group of plants that produce seeds that are not enclosed in an ovary. They are characterized by having naked seeds.

2. **Definition of Heterosporous**:
- Heterosporous plants produce two different types of spores: microspores and megaspores. The term "hetero" means different.

3. **Types of Spores Produced**:
- Gymnosperms produce two types of spores:
- **Microspores**: These are produced in the male cones (microsporangia) and are haploid. They develop into pollen grains, which are the male gametophytes.
- **Megaspores**: These are produced in the female cones (megasporangia) and are also haploid. Typically, only one megaspore is produced, which develops into the female gametophyte.

4. **Conclusion**:
- Since both microspores and megaspores produced by gymnosperms are haploid, the correct answer to the question is that gymnosperms produce haploid microspores and haploid megaspores.

### Final Answer:
Gymnosperms are heterosporous, and they produce **haploid microspores and haploid megaspores**.

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