Which of the following waste products is not excreted in Grasshopper but is used in other metabolic activities

Options

A. Carbon dioxide
B. Water
C. Uric acid
D. Faeces

Answer

To solve the question regarding which waste product is not excreted in grasshoppers but is used in other metabolic activities, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Excretory System of Grasshoppers**:
- Grasshoppers are classified as uricotelic organisms. This means they primarily excrete nitrogenous waste in the form of uric acid.

2. **Identify Characteristics of Uric Acid**:
- Uric acid is the least soluble in water compared to other nitrogenous wastes like ammonia and urea. This characteristic allows grasshoppers to conserve water, which is crucial for their survival, especially in arid environments.

3. **Consider the Role of Water**:
- In grasshoppers, water is conserved for metabolic activities. Since uric acid is excreted in a concentrated form, it indicates that water is retained for other physiological processes.

4. **Analyze the Options Given**:
- The options provided likely include various waste products. We need to identify which one is not excreted but utilized in metabolism.
- Common waste products include carbon dioxide, water, uric acid, and feces.

5. **Evaluate Each Option**:
- **Carbon Dioxide**: This is a waste product of respiration but is not conserved for metabolic activities.
- **Water**: While it is crucial for metabolic processes, it is not excreted as a waste product in the same sense as uric acid.
- **Uric Acid**: This is the primary nitrogenous waste excreted by grasshoppers.
- **Feces**: This includes undigested food and is also excreted.

6. **Conclusion**:
- The waste product that is not excreted in grasshoppers but is used in other metabolic activities is **water**. Grasshoppers conserve water for their metabolic functions, while uric acid is excreted.

### Final Answer:
Water is the waste product not excreted in grasshoppers but used in other metabolic activities.