In which of the following sclerenchymatous pericycle is found in the form of semi-lunar patches :-

Options

A. Sunflower stem
B. Sunflower root
C. Zea mays stem
D. Cucurbita stem

Answer

To determine in which of the following options the sclerenchymatous pericycle is found in the form of semi-lunar patches, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Sclerenchyma and Pericycle**:
- Sclerenchyma is a type of plant tissue that provides structural support. The pericycle is a layer of cells located just inside the endodermis of roots and stems.
- The question specifically asks about the arrangement of sclerenchymatous pericycle in the form of semi-lunar patches.

2. **Analyzing the Options**:
- **Option 1: Cucumber (Cucurbita stem)**:
- In Cucurbita stems, the pericycle is typically continuous and does not form semi-lunar patches. This option can be eliminated.

- **Option 2: GMA stem**:
- GMA (likely referring to a monocot) stems do not have fully differentiated vascular tissues, and the pericycle is not typically sclerenchymatous. Therefore, this option can also be eliminated.

- **Option 3: Sunflower root**:
- The root of sunflower is primarily composed of parenchyma and does not exhibit sclerenchymatous pericycle in semi-lunar patches. This option is eliminated as well.

- **Option 4: Sunflower stem**:
- In the sunflower stem, the sclerenchymatous pericycle is found in the form of semi-lunar patches. Between these patches, parenchymal cells are present, making this the correct option.

3. **Conclusion**:
- Based on the analysis, the correct answer is the **sunflower stem**, as it contains sclerenchymatous pericycle in the form of semi-lunar patches.

### Final Answer:
The sclerenchymatous pericycle is found in the form of semi-lunar patches in the **sunflower stem**.

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