Which one of the following is not an antitranspirant

Options

A. Low viscosity resin
B. BAP
C. Silicone oil
D. PMA

Answer

**Step-by-Step Solution:**

1. **Understand Transpiration**: Transpiration is the process by which plants lose water in the form of water vapor from their aerial parts, primarily through small openings called stomata.

2. **Identify Antitranspirants**: Antitranspirants are substances that are applied to the leaves of plants to reduce water loss through transpiration. They help in conserving water and improving the efficiency of crops.

3. **Evaluate the Given Options**: The question provides several options, and we need to determine which one is not an antitranspirant. The options given are:
- Low viscosity resin
- Silicon oil
- PMA (Phenyl mercuric acetate)
- Benzopyrene

4. **Analyze Each Option**:
- **Low viscosity resin**: This is an antitranspirant as it can form a film on the leaf surface, reducing water loss.
- **Silicon oil**: This is also considered an antitranspirant because it can reduce transpiration by forming a barrier.
- **PMA (Phenyl mercuric acetate)**: This is known to be an antitranspirant as it helps in reducing transpiration.
- **Benzopyrene**: This compound is not an antitranspirant. It does not have the properties to reduce water loss in plants.

5. **Conclusion**: After evaluating all the options, it is clear that benzopyrene is not an antitranspirant.

**Final Answer**: Benzopyrene is not an antitranspirant.

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