Which of the following is not true for the vascular bundles of monocotyledonous stems?

Options

A. Scattered in the ground tissue
B. Possess water-containing cavities
C. Ring' arrangement
D. Conjoint and closed

Answer

To determine which statement is not true for the vascular bundles of monocotyledonous stems, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understand the Structure of Monocot Stems**:
- Monocot stems have vascular bundles that are scattered throughout the ground tissue. This is a key characteristic that differentiates them from dicot stems, which have vascular bundles arranged in a ring.

2. **Analyze the Options**:
- **Option 1: Scattered in the ground tissue** - This is true for monocot stems.
- **Option 2: Possess water-containing cavities** - This is also true; monocots can have such cavities.
- **Option 3: Ring arrangement** - This is not true for monocot stems. Monocots do not have their vascular bundles arranged in a ring; they are scattered.
- **Option 4: Conjoined and closed** - This is true; monocot vascular bundles are typically conjoined and closed.

3. **Identify the Incorrect Statement**:
- Based on the analysis, the statement that is not true for the vascular bundles of monocotyledonous stems is **Option 3: Ring arrangement**.

### Final Answer:
The statement that is not true for the vascular bundles of monocotyledonous stems is **Option 3: Ring arrangement**.

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