Which of the following is homosporous:

Options

A. Selaginella
B. Pinus
C. Cycas
D. Lycopodium

Answer

To determine which of the following is homosporous, we need to understand the definitions and characteristics of homospory and heterospory.

### Step-by-Step Solution:

1. **Understand Homospory**:
- Homospory refers to the condition where a plant produces only one type of spore. This single type of spore develops into a gametophyte that contains both male and female reproductive organs.

2. **Understand Heterospory**:
- Heterospory is the condition where a plant produces two different types of spores: microspores (male) and megaspores (female). This leads to the development of separate male and female gametophytes.

3. **Identify Examples**:
- Common examples of homosporous plants include many ferns and mosses. In contrast, plants like Selaginella and Salvinia are examples of heterosporous plants.

4. **Analyze the Options**:
- If the question provides multiple options, we need to evaluate each one to see if it produces only one type of spore (homosporous) or two types of spores (heterosporous).

5. **Select the Correct Answer**:
- Based on the definitions and examples, identify the option that represents a plant that is known to be homosporous. For instance, if the options include Lycopodium, it is homosporous, while Selaginella and Salvinia are heterosporous.

6. **Final Conclusion**:
- Mark the correct option that indicates a homosporous plant.