Read the following statements with respect to dicot stem and select the right choice .
i. The epidermis is covered with a thick layer of cuticle .
ii. The cells of endodermis are rich in starch grains.
iii. The pericycle is present on the inner side of endodermis and above the phloem in the of semilunar patches of sclerenchyma.
iv. The vascular bundles are arranged in a ring .

Options

A. iii and iv are incorrect
B. i ,ii and iv are incorrect
C. i, ii and iii are correct
D. ii ,iii, and iv are correct

Answer

To solve the question regarding the anatomy of a dicot stem, we need to analyze each of the four statements provided and determine their correctness.

### Step-by-Step Solution:

1. **Evaluate Statement I**: "The epidermis is covered with a thick layer of cuticle."
- In dicot stems, the epidermis is indeed present, but it is covered with a **thin layer** of cuticle, not a thick one. Therefore, this statement is **incorrect**.

2. **Evaluate Statement II**: "The cells of endodermis are rich in starch grains."
- The endodermis is the innermost layer of the cortex in a dicot stem, and it is known to be rich in starch grains. This characteristic is why the endodermis is often referred to as a "starch sheath." Therefore, this statement is **correct**.

3. **Evaluate Statement III**: "The pericycle is present on the inner side of endodermis and above the phloem in the semi-lunar patches of sclerenchyma."
- The pericycle is indeed located just inside the endodermis and can be found in patches, often described as semi-lunar in shape. This statement is also **correct**.

4. **Evaluate Statement IV**: "The vascular bundles are arranged in a ring."
- In dicot stems, the vascular bundles are typically arranged in a ring formation. This statement is **correct** as well.

### Conclusion:
- After evaluating all four statements, we find that:
- Statement I: Incorrect
- Statement II: Correct
- Statement III: Correct
- Statement IV: Correct

Thus, the correct choice is that statements II, III, and IV are correct.

### Final Answer:
The right choice is that statements II, III, and IV are correct.

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