Which of the following terms have been grouped incorrectly ?

Options

A. Sclerenchymatous hypodermis : dicot stem
B. Collenchymatous hypodermis : monocot stem
C. Starch sheath : Pericycle of dicot stem
D. Starch sheath : Endodermis of dicot stem

Answer

To solve the question "Which of the following terms have been grouped incorrectly?", we need to analyze each option provided:

### Step-by-Step Solution:

1. **Understanding Option A: Sclerenchymatous hypodermis, Dicot-stem**
- The sclerenchymatous hypodermis is indeed present in dicot stems. It provides mechanical support and is typically composed of thick-walled cells. This grouping is correct.

2. **Understanding Option B: Collenchymatous hypodermis, Monocot-stem**
- The collenchymatous hypodermis is generally found in monocot stems. It provides flexibility and support, particularly in young stems. This grouping is also correct.

3. **Understanding Option C: Starch sheath which is pericycle of Dicot-stem**
- The starch sheath refers to a layer of cells that store starch and is located in the pericycle of dicot stems. This grouping is correct as well.

4. **Understanding Option D: Starch sheath which is endodermis of Dicot-stem**
- The starch sheath is not found in the endodermis of dicot stems; rather, it is located in the pericycle. Therefore, this grouping is incorrect.

### Conclusion:
The term that has been grouped incorrectly is **Option D: Starch sheath which is endodermis of Dicot-stem**.

### Final Answer:
**Option D is the incorrect grouping.**

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