Girdling experiment is not successful in monocots due of

Options

A. Vansular bundles are not arranged in a ring
B. Vascular bundles are arranged in a ring
C. Vascular bundles are radial
D. None of above.

Answer

### Step-by-Step Solution:

1. **Understanding Girdling Experiment**: The girdling experiment, also known as the ringing experiment, involves removing a ring of bark from a plant. This process disrupts the continuity of vascular tissues (xylem and phloem) and helps in studying the transport of nutrients and water in plants.

2. **Identifying the Plant Types**: The question specifically refers to monocots (monocotyledons) and dicots (dicotyledons). Monocots include plants like grasses and lilies, while dicots include plants like beans and roses.

3. **Vascular Bundle Arrangement**: In dicots, vascular bundles are typically arranged in a ring, which allows for effective girdling. This arrangement facilitates the transport of nutrients and water through the vascular system.

4. **Monocot Vascular Bundle Characteristics**: In contrast, monocots have vascular bundles that are scattered throughout the stem. This scattered arrangement means that there is no continuous ring of vascular tissue to disrupt, making the girdling experiment ineffective.

5. **Conclusion**: The girdling experiment is not successful in monocots because their vascular bundles are not arranged in a ring. This lack of organization in the arrangement of xylem and phloem prevents the experiment from yielding the expected results.

### Final Answer:
The girdling experiment is not successful in monocots due to **vascular bundles are not arranged in a ring**.

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