A simple living permanent tissue which is absent in roots is

Options

A. Collenchyma
B. Chlorenchyma
C. Aerenchyma
D. Parenchyma

Answer

To solve the question, "A simple living permanent tissue which is absent in roots is," we can follow these steps:

### Step 1: Understand the Types of Simple Living Permanent Tissues
- There are several types of simple living permanent tissues in plants, including parenchyma, collenchyma, and sclerenchyma. Each has distinct characteristics and functions.

### Step 2: Analyze the Options Given
- The options provided are:
1. Chlorenchyma
2. Chlorenchyma (repeated)
3. Erynchyma
4. Collenchyma

### Step 3: Identify the Characteristics of Each Tissue
- **Chlorenchyma**: A type of parenchyma that contains chloroplasts and is involved in photosynthesis. It is typically found in leaves and stems.
- **Erynchyma**: This appears to be a typographical error; it likely refers to "erenchyma," which is not a recognized term in plant anatomy.
- **Collenchyma**: This tissue has thickened cell walls and provides support, especially in young stems and leaves. It is known for being flexible and is not present in roots.

### Step 4: Determine Which Tissue is Absent in Roots
- Collenchyma is specifically noted for being absent in roots, as it primarily supports stems and leaves. Therefore, the correct answer to the question is **Collenchyma**.

### Final Answer
The simple living permanent tissue which is absent in roots is **Collenchyma**.

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