Which is not true for anatomy of the Dicot stem ?

Options

A. Hypodermis is collenchymatous
B. Vascular bundles are arranged in a ring
C. Vascular bundles are conjoint and closed
D. phloem parenchyma is present

Answer

To determine which statement is not true regarding the anatomy of the dicot stem, we can analyze each option provided:

### Step-by-Step Solution:

1. **Examine the First Statement: "Hypodermis is called cholenchyma."**
- The hypodermis in dicot stems is indeed made up of collenchyma cells.
- **Conclusion:** This statement is true.

2. **Examine the Second Statement: "Vascular bundles are arranged in a ring."**
- In dicot stems, the vascular bundles are typically arranged in a ring formation.
- **Conclusion:** This statement is also true.

3. **Examine the Third Statement: "Vascular bundles are conjoined and closed."**
- In dicot stems, the vascular bundles are actually collateral and open, meaning they have cambium present between the xylem and phloem.
- **Conclusion:** This statement is not true.

4. **Examine the Fourth Statement: "Phloem parenchyma is present."**
- Phloem parenchyma is indeed present in dicot stems and plays a role in storage and transport.
- **Conclusion:** This statement is true.

### Final Answer:
The statement that is not true for the anatomy of the dicot stem is: **"Vascular bundles are conjoined and closed."**

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