Which of the following is the correct pairing of characteristics about anther wall ?

Options

A. `{:("Hygroscpic nature","Innermost layer","Fibrous thickening of cellulose"),("Epidermis","Tapetum","Endothecium"):}`
B. `{:("Hygroscpic nature","Innermost layer","Fibrous thickening of cellulose"),("Endothecium","Tapetum","Middle layer"):}`
C. `{:("Hygroscpic nature","Innermost layer","Fibrous thickening of cellulose"),("Middle layer","Tapetum","Endothecium"):}`
D. `{:("Hygroscpic nature","Innermost layer","Fibrous thickening of cellulose"),("Endothecium","Tapetum","Endothecium"):}`

Answer

To solve the question regarding the correct pairing of characteristics about the anther wall, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Anther Wall**:
- The anther wall consists of four distinct layers:
- **Epidermis**: The outermost protective layer.
- **Endothecium**: The layer beneath the epidermis, characterized by fibrous thickening.
- **Middle Layer**: A layer that lies between the endothecium and the tapetum.
- **Tapetum**: The innermost layer that provides nourishment to the developing pollen grains.

2. **Identify Characteristics of Each Layer**:
- **Epidermis**: Protective function.
- **Endothecium**: Contains fibrous thickening and is hygroscopic, which means it can absorb moisture.
- **Middle Layer**: Generally not specified in terms of unique characteristics.
- **Tapetum**: Provides nutrition to the pollen grains.

3. **Analyze the Options Provided**:
- Compare the characteristics listed in the options with the known functions of each layer.
- Look for pairs that accurately reflect the characteristics of the anther wall layers.

4. **Select the Correct Pairing**:
- Based on the analysis, identify which option correctly pairs the characteristics with the respective layers of the anther wall.

5. **Conclusion**:
- The correct pairing of characteristics about the anther wall is that the **Endothecium is hygroscopic** and the **Tapetum is the innermost layer providing nutrition**.