Assertion : Leucoplasts perform photosynthesis.
Reason : Chloroplasts store fat, starch and proteins.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Explanation

To solve the question, we need to evaluate the Assertion and Reason statements provided:

### Step 1: Analyze the Assertion
- **Assertion**: "Leucoplasts perform photosynthesis."
- **Explanation**: Leucoplasts are a type of plastid that are primarily involved in the storage of starch, fats, and proteins. They do not contain chlorophyll or other photosynthetic pigments, which are essential for the process of photosynthesis. Therefore, this assertion is **false**.

### Step 2: Analyze the Reason
- **Reason**: "Chloroplasts store fat, starch, and proteins."
- **Explanation**: Chloroplasts are the plastids responsible for photosynthesis, containing chlorophyll. They do not primarily function to store fats, starch, and proteins. Instead, other types of plastids are responsible for these functions:
- **Amyloplasts** store starch.
- **Elaioplasts** store fats.
- **Alluroplasts** store proteins.
Thus, this reason is also **false**.

### Step 3: Conclusion
- Since both the assertion and the reason are false, the correct answer is that **both assertion and reason are false**.

### Final Answer:
Both assertion and reason are false.

---