$ Fungi may be heterotrophic or autotrophic.
! Mycelium of Rhizopus has uninucleated cells.

Options

A. If both As and R are correct and R is correct explanation of As
B. If both As and R are correct but R is not correct explanation of As
C. If As is correct, R is wrong
D. If both As and R are wrong.

Answer

To solve the question, we need to analyze both the assertion and the reason provided in the statement.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Fungi may be heterotrophic or autotrophic."
- Fungi are known to be heterotrophic organisms, meaning they obtain their nutrients by absorbing organic compounds from their environment. They do not have chlorophyll and cannot perform photosynthesis, which is characteristic of autotrophic organisms. Therefore, this assertion is incorrect.

2. **Understanding the Reason**:
- The reason states that "Mycelium of Rhizopus has uninucleated cells."
- Rhizopus is a genus of fungi, and its mycelium is actually composed of multinucleated cells (coenocytic hyphae). This means that the cells in the mycelium of Rhizopus contain multiple nuclei, making this statement incorrect as well.

3. **Evaluating the Options**:
- Now we need to evaluate the options based on our analysis:
- **Option A**: Both assertion and reason are correct. (Incorrect, as both are wrong)
- **Option B**: Both assertion and reason are correct, and reason is the correct explanation of assertion. (Incorrect)
- **Option C**: Assertion is correct, and reason is wrong. (Incorrect)
- **Option D**: Both assertion and reason are wrong. (Correct, as both statements are indeed incorrect)

4. **Conclusion**:
- The correct answer is **Option D**: Both assertion and reason are wrong.