Assertion : In collateral vascular bundles phloem is situated toward inner side.
Reason : In monocot stem, cambium is present .

Options

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

Answer

To solve the question, we need to analyze the assertion and the reason provided:

**Assertion:** In collateral vascular bundles, phloem is situated toward the inner side.
**Reason:** In monocot stem, cambium is present.

### Step-by-Step Solution:

1. **Understanding Vascular Bundles:**
- Vascular bundles are structures in plants that contain xylem and phloem, which are responsible for the transport of water and nutrients.
- They can be classified into two main types: radial and conjoint (or collateral).

2. **Types of Collateral Vascular Bundles:**
- In collateral vascular bundles, the arrangement is such that phloem is located on the outside and xylem is on the inside.
- This means that the assertion stating "phloem is situated toward the inner side" is incorrect.

3. **Examining the Reason:**
- The reason states that "in monocot stem, cambium is present."
- In monocot stems, cambium is generally absent, which means this statement is also incorrect.

4. **Conclusion:**
- Since both the assertion and the reason are incorrect, we conclude that the correct answer is that both statements are false.

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

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