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 regarding the type of spores produced by gymnosperms, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Gymnosperms**: Gymnosperms are a group of plants that produce seeds that are not enclosed in an ovary (hence the name "naked seeds"). This characteristic distinguishes them from angiosperms, which produce enclosed seeds.

2. **Define Heterospory**: Heterospory refers to the production of two different types of spores by a plant. In contrast, homospory refers to the production of only one type of spore.

3. **Identify the Types of Spores**: In gymnosperms, the two types of spores produced are:
- Microspores: These are the smaller spores that develop into male gametophytes (which produce male gametes).
- Megaspores: These are the larger spores that develop into female gametophytes (which produce female gametes).

4. **Determine the Ploidy of Spores**:
- Microspores are haploid (1n) and give rise to male gametes.
- Megaspores are also haploid (1n) and give rise to female gametes.

5. **Analyze the Options**: The question provides several options regarding the types of spores produced by gymnosperms:
- Diploid microspores and megaspores
- Diploid microspores and haploid megaspores
- Haploid microspores and diploid megaspores
- Haploid microspores and megaspores

6. **Select the Correct Answer**: Since both microspores and megaspores produced by gymnosperms are haploid, the correct answer is:
- **Haploid microspores and megaspores**.

### Final Answer:
The gymnosperms are heterosporous; they produce **haploid microspores and megaspores**.

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