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What is the main function of anti-transp...

What is the main function of anti-transpirants ?

A

Reduce the rate of transpiration without affecting carbon assimilation

B

Reduce the rate of transpiration affecting carbon assimilation

C

Reduce the rate of transpiration affecting growth of plants

D

Reduce the rate of transpiration affecting protein synthesis of plant

Text Solution

AI Generated Solution

The correct Answer is:
To answer the question regarding the main function of anti-transpirants, we can break down the information as follows: ### Step-by-Step Solution: 1. **Definition of Anti-transpirants**: Anti-transpirants are compounds that are applied to the surface of leaves. Their primary purpose is to reduce the rate of transpiration in plants. **Hint**: Remember that anti-transpirants are specifically designed to affect transpiration rates. 2. **Mechanism of Action**: These compounds work by reducing the stomatal opening on the leaves. Stomata are small openings that allow for gas exchange (including water vapor) between the plant and the environment. **Hint**: Focus on how anti-transpirants influence stomatal behavior. 3. **Effect on Water Vapor Diffusion**: By reducing the stomatal opening, anti-transpirants increase the resistance of the leaf to water vapor diffusion. This means that less water is lost through transpiration. **Hint**: Consider what happens to water loss when stomata are less open. 4. **Impact on Carbon Assimilation**: Importantly, while anti-transpirants reduce transpiration, they do not significantly affect the uptake of carbon dioxide (CO2) for photosynthesis. This means that the process of carbon assimilation remains largely unaffected. **Hint**: Think about the relationship between transpiration and carbon dioxide uptake. 5. **Conclusion**: Based on the above points, the main function of anti-transpirants is to reduce the rate of transpiration without affecting carbon assimilation. Therefore, the correct answer to the question is: **Answer**: Reduce the rate of transpiration without affecting carbon assimilation. ### Summary of the Main Function: The primary function of anti-transpirants is to minimize water loss through transpiration while allowing the plant to continue its essential process of carbon assimilation, ensuring that it does not suffer from drought stress.
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