Minor structural component in lichen body is/can :

Options

A. Prokaryotic or eukaryotic
B. Simple, photosynthetic organism
C. Fix `CO_(2)` and `N_(2)`
D. More than one option is correct

Answer

To solve the question regarding the minor structural component in the lichen body, we can break it down into several steps:

### Step-by-Step Solution:

1. **Understanding Lichens**:
- Lichens are symbiotic associations between fungi and algae. This means that they consist of two different organisms living together and benefiting from each other.

2. **Identifying the Components**:
- In lichens, the fungal component is known as the **mycobiont**, while the algal component is referred to as the **phycobiont**.

3. **Recognizing the Role of the Algal Component**:
- The phycobiont (algal component) is responsible for photosynthesis, which means it can produce food using sunlight. This makes it a crucial part of the lichen's structure.

4. **Types of Algae in Lichens**:
- The algal component can be either **prokaryotic** (like cyanobacteria) or **eukaryotic** (like green algae from the group Chlorophyta).

5. **Functions of the Algal Component**:
- These algae are simple photosynthetic organisms that can fix carbon dioxide and, in the case of cyanobacteria, can also fix nitrogen. This means they can convert atmospheric nitrogen into a form that can be used by other organisms.

6. **Conclusion**:
- Therefore, the minor structural component in the lichen body can be described as either prokaryotic or eukaryotic simple photosynthetic organisms that can fix carbon dioxide and nitrogen.

### Final Answer:
The minor structural component in the lichen body is **prokaryotic or eukaryotic simple photosynthetic organisms** that can fix carbon dioxide and nitrogen.

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