Root hairs do not play a role in

Options

A. water uptake
B. oxyger uoteke
C. carbon dioxide uptake
D. mineral uptake

Answer

To solve the question "Root hairs do not play a role in," we will analyze the functions of root hairs and determine which option is correct based on their roles.

### Step-by-Step Solution:

1. **Understanding Root Hairs**:
- Root hairs are tiny, hair-like structures that extend from the roots of plants.
- Their primary function is to increase the surface area for absorption.

2. **Role of Root Hairs**:
- **Water Uptake**: Root hairs are crucial for the absorption of water from the soil. They help in taking up water through osmosis.
- **Mineral Uptake**: Root hairs also absorb essential minerals and nutrients dissolved in the soil water.
- **Oxygen Uptake**: While root hairs do not directly absorb oxygen, they facilitate the uptake of oxygen through the soil as roots respire.

3. **Analyzing the Options**:
- **Water Uptake**: Root hairs play a significant role in this process. (Incorrect option)
- **Oxygen Uptake**: Although not their primary function, root hairs contribute indirectly to oxygen absorption. (Incorrect option)
- **Carbon Dioxide Uptake**: Root hairs do not absorb carbon dioxide from the soil. Instead, carbon dioxide is released during respiration. (Correct option)
- **Mineral Uptake**: Root hairs are essential for the uptake of minerals from the soil. (Incorrect option)

4. **Conclusion**:
- Based on the analysis, root hairs do not play a role in carbon dioxide uptake. Therefore, the correct answer is **carbon dioxide uptake**.

### Final Answer:
Root hairs do not play a role in **carbon dioxide uptake**.

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