A girdled plant will eventually die because of

Options

A. Absence of downward movement of water
B. Absence of upward movement of water
C. Absence of upward supply of organic nutrients
D. Absence of downward movement of organic nutrients.

Answer

To answer the question "A girdled plant will eventually die because of," we need to understand what girdling means and how it affects the plant's transport systems.

### Step-by-Step Solution:

1. **Understanding Girdling**:
- Girdling, also known as ring barking, involves the complete removal of a strip of bark from around the entire circumference of a branch or trunk of a plant. This process disrupts the flow of nutrients and water within the plant.

2. **Identifying Plant Transport Systems**:
- Plants have two main transport systems:
- **Xylem**: Responsible for the upward movement of water and minerals from the roots to the leaves.
- **Phloem**: Responsible for the downward movement of organic nutrients (like sugars) produced in the leaves to the rest of the plant.

3. **Effects of Girdling**:
- When the bark is removed, the phloem is damaged, which impedes the downward movement of organic nutrients. This means that the sugars produced in the leaves cannot be transported to the roots and other parts of the plant.

4. **Consequences of Impaired Transport**:
- Without the supply of organic nutrients from the leaves, the roots and other parts of the plant cannot sustain themselves. Eventually, this leads to the death of the plant due to starvation of essential nutrients.

5. **Conclusion**:
- Therefore, the correct answer to the question is that a girdled plant will eventually die because of the **absence of downward movement of organic nutrients**.

### Final Answer:
A girdled plant will eventually die because of the absence of downward movement of organic nutrients.

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