For absorption of water, the root hairs act as
(a) Sucking organs
(b) Osmotic system
(c) Manometer
(d) Anemometer

Options

A. Sucking ogans
B. Osmotic system
C. Manometer
D. Anemometer

Answer

To solve the question regarding the role of root hairs in the absorption of water, we can analyze each option provided:

1. **Understanding the Function of Root Hairs**:
- Root hairs are tiny, hair-like structures that extend from the root of a plant. Their primary function is to increase the surface area for absorption of water and nutrients from the soil.

2. **Evaluating Each Option**:
- **Option (a) Sucking organs**:
- Sucking organs are typically associated with animals and are used to draw in fluids. Root hairs do not function in this manner; they do not suck water but rather facilitate its absorption through osmosis. Thus, this option is incorrect.

- **Option (b) Osmotic system**:
- This option refers to the process of osmosis, where water moves from an area of higher concentration (in the soil) to an area of lower concentration (inside the root hairs). Root hairs effectively act as an osmotic system, allowing for the absorption of water. This option is correct.

- **Option (c) Manometer**:
- A manometer is a device used to measure pressure. It is not related to the function of root hairs in water absorption. Therefore, this option is incorrect.

- **Option (d) Anemometer**:
- An anemometer is a device used to measure wind speed. This has no relevance to the function of root hairs in absorbing water, making this option incorrect as well.

3. **Conclusion**:
- After evaluating all the options, the correct answer is **(b) Osmotic system**. Root hairs play a crucial role in the absorption of water through the process of osmosis.

### Final Answer:
(b) Osmotic system