Algae attached to stone is called

Options

A. Epiploic
B. Coenolithic
C. Epilithic
D. None of the above.

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for the term used to describe algae that are attached to stones.

2. **Identifying Relevant Terms**: In the study of algae and their habitats, there are specific terms used to classify algae based on their attachment to surfaces.

3. **Defining Lithophytes**: Algae that grow on rocky surfaces are referred to as lithophytes. This term is derived from "litho," meaning stone, and "phyte," meaning plant.

4. **Identifying the Correct Term**: The specific term for algae that are attached to stones is "epilithic." This term indicates that the algae are living on the surface of rocks.

5. **Eliminating Incorrect Options**:
- Option A (Apiploic) does not relate to algae on stones.
- Option B (Cenolithic) is also not relevant to the attachment of algae to stones.
- Option D (None of the above) is incorrect since we have identified the correct term.

6. **Conclusion**: Based on the definitions and the elimination of incorrect options, the correct answer is option C, "epilithic."

**Final Answer**: The algae attached to stone is called **C. Epilithic**.

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