Cortex is bigger than stele in

Options

A. Dicot stem and Monocot stem
B. Monocot root and Dicot root
C. Dicot stem and Monocot root
D. Monocot stem and Dicot root

Answer

To solve the question "Cortex is bigger than stele in," we need to analyze the relationship between the cortex and stele in different types of plant structures. Here’s a step-by-step solution:

### Step-by-Step Solution:

1. **Understanding Cortex and Stele**:
- **Cortex**: This is the outer layer of tissue in a plant, located just beneath the epidermis in stems and roots.
- **Stele**: This refers to the central part of the root or stem, which contains the vascular tissues (xylem and phloem).

2. **Identifying the Types of Plants**:
- We need to consider the two main categories of flowering plants: **Monocots** and **Dicots**.
- Monocots have one cotyledon, while dicots have two.

3. **Analyzing the Structure in Roots**:
- In the roots of both monocots and dicots, the cortex is typically larger than the stele.
- This is because the stele is more compact and contains the vascular tissues, while the cortex serves as a storage area and is generally more expansive.

4. **Analyzing the Structure in Stems**:
- In stems, the relationship is different. Generally, in both monocots and dicots, the cortex is smaller than the stele.
- Therefore, we do not observe the cortex being larger than the stele in stems.

5. **Evaluating the Options**:
- **Option 1**: Dicot stem and monocot stem - Incorrect (Cortex is smaller than stele).
- **Option 2**: Monocot root and dicot root - Correct (Cortex is larger than stele).
- **Option 3**: Dicot stem and monocot root - Incorrect (Cortex is smaller than stele in dicot stem).
- **Option 4**: Monocot stem and dicot root - Incorrect (Cortex is smaller than stele in monocot stem).

6. **Conclusion**:
- The correct answer is **Option 2: Monocot root and Dicot root**, where the cortex is indeed larger than the stele.