Algal component in a lichen

Options

A. is called mycobiont
B. absorbs water from substraction
C. prepares food for fungi
D. lives as a parasite on fungus

Answer

**Step-by-Step Solution:**

1. **Understanding Lichens**: Lichens are composite organisms formed from a symbiotic relationship between two different living organisms: fungi and algae. This relationship is crucial for the survival of both organisms.

2. **Identifying the Components**: In lichens, the algal component is referred to as the "photobiont." The fungal component is known as the "mycobiont."

3. **Role of the Algal Component**: The primary role of the algal component (photobiont) in lichens is to perform photosynthesis. Algae contain chlorophyll, which allows them to convert sunlight into energy and produce food.

4. **Food Production**: Through the process of photosynthesis, the algal component prepares food, which is then utilized by the fungal component (mycobiont). This mutual exchange is essential for the survival of both organisms.

5. **Eliminating Incorrect Options**:
- **Mycobiont**: This term refers to the fungal component, not the algal component.
- **Absorb Water from Substratum**: This is a function of the fungal part, not the algal part.
- **Lives as a Parasite on Fungus**: This is incorrect as the algal component is not a parasite; it contributes positively to the symbiotic relationship.

6. **Conclusion**: The correct answer is that the algal component in lichens prepares food for the fungi through photosynthesis.

**Final Answer**: The algal component in a lichen prepares food for the fungi.

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