Assertion : Glyoxisome, sphaerosome, lysosome are surrounded by single membrane
Reason : Quantasome present in chloroplast.

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.

Answer

To solve the question, we will analyze both the assertion and the reason provided.

### Step 1: Analyze the Assertion
The assertion states: "Glyoxisome, sphaerosome, lysosome are surrounded by single membrane."

- **Glyoxisomes** are indeed specialized peroxisomes found in plants, particularly in fat storage tissues of germinating seeds. They are surrounded by a single membrane.
- **Sphaerosomes** (also known as oleosomes) are small organelles involved in lipid storage and synthesis, and they too are surrounded by a single membrane.
- **Lysosomes** are membrane-bound organelles found in eukaryotic cells containing degradative enzymes, and they are also surrounded by a single membrane.

Thus, the assertion is **true**.

### Step 2: Analyze the Reason
The reason states: "Quantasome present in chloroplast."

- **Quantasomes** are indeed found in the thylakoid membranes of chloroplasts and are involved in the process of photosynthesis. They are arranged in a para-crystalline array on the thylakoid disks.
- However, the presence of quantasomes in chloroplasts does not relate to the assertion about glyoxysomes, sphaerosomes, and lysosomes being surrounded by a single membrane.

Thus, the reason is **true**, but it does not explain the assertion.

### Conclusion
Both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.

### Final Answer
The correct option is: **Both assertion and reason are true but reason is not the correct explanation of the assertion.**

---