Roots play insignificant role in absorption of water in

Options

A. Sunflower
B. Pistia
C. Pea
D. Wheat

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which plant has roots that play an insignificant role in the absorption of water. The options given are sunflower, pistia, pea, and wheat.

2. **Function of Roots**: Roots are primarily responsible for the absorption of water and minerals from the soil. However, in some plants, this function can be reduced or modified.

3. **Identifying the Plant Types**:
- **Sunflower**: A terrestrial plant with well-developed roots for water absorption.
- **Pea**: Another terrestrial plant with significant root systems for water uptake.
- **Wheat**: Also a terrestrial plant that relies on its roots for water absorption.
- **Pistia**: An aquatic plant (hydrophyte) that floats on water.

4. **Analyzing Pistia**:
- **Aquatic Nature**: Pistia is a hydrophyte, meaning it lives in water.
- **Root Structure**: The roots of Pistia are reduced and submerged in water.
- **Water Absorption**: In hydrophytes like Pistia, water can diffuse directly into the leaves from the surrounding water, making the role of roots in water absorption insignificant.

5. **Conclusion**: Based on the analysis, the plant in which roots play an insignificant role in the absorption of water is **Pistia**.

### Final Answer:
The roots play an insignificant role in the absorption of water in **Pistia**.

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