Assertion : The plasma membrane is porous and allows the movement of substances outward only
Reason : Plasma membrane is made up of lipids and sugars only

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

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that "The plasma membrane is porous and allows the movement of substances outward only." We need to evaluate whether this statement is true or false.
- **Evaluation**: The plasma membrane is indeed porous but it is selectively permeable, meaning it allows certain substances to move in and out, not just outward. Therefore, this assertion is **false**.

2. **Understanding the Reason**: The reason provided is "Plasma membrane is made up of lipids and sugars only." We need to check the accuracy of this statement.
- **Evaluation**: The plasma membrane is primarily composed of lipids, but it also contains proteins and carbohydrates (sugars). Thus, this reason is also **false**.

3. **Conclusion**: Since both the assertion and the reason are false, we need to select the appropriate option based on this conclusion.
- The correct option is: "If both assertion and reason are false."

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

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