Question:
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Hot water treatment is effective in controlling postharvest diseases in several fruits.
Reason R: It improves lignification in outer layers of fruits but in certain cases it enhances ripening and reduces shelf life.
In light of the above statements, choose the most appropriate answer from the options given below:
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Hot water treatment is effective in controlling postharvest diseases in several fruits.
Reason R: It improves lignification in outer layers of fruits but in certain cases it enhances ripening and reduces shelf life.
In light of the above statements, choose the most appropriate answer from the options given below:
Assertion A: Hot water treatment is effective in controlling postharvest diseases in several fruits.
Reason R: It improves lignification in outer layers of fruits but in certain cases it enhances ripening and reduces shelf life.
In light of the above statements, choose the most appropriate answer from the options given below:
Show Hint
Remember hot water treatment parameters:
- Temperature: 45-55°C
- Duration: 5-30 minutes (varies by fruit)
- Benefits: Controls postharvest diseases
- Risks: Can cause heat injury if not controlled
- Common fruits: Mango (52°C, 5-10 min), Papaya (48°C, 20 min)
- Temperature: 45-55°C
- Duration: 5-30 minutes (varies by fruit)
- Benefits: Controls postharvest diseases
- Risks: Can cause heat injury if not controlled
- Common fruits: Mango (52°C, 5-10 min), Papaya (48°C, 20 min)
Updated On: Aug 20, 2026
- Both A and R are correct and R is the correct explanation of A
- Both A and R are correct but R is NOT the correct explanation of A
- A is correct but R is not correct
- A is not correct but R is correct
Show Solution
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
This question tests knowledge of postharvest management of fruits, specifically hot water treatment.
Step 2: Detailed Explanation:
Assertion A:
Hot water treatment (HWT) is indeed effective in controlling postharvest diseases.
It reduces fungal and bacterial pathogens on fruit surfaces.
Used for mango, papaya, citrus, etc.
This statement is true.
Reason R:
Hot water treatment improves lignification in outer layers, making them more resistant to pathogen entry.
However, in some cases, it can enhance ripening and reduce shelf life due to heat stress.
This statement is true.
Relationship between A and R:
R explains A by describing the mechanism of action:
- Lignification provides resistance to disease.
- The trade-off of enhanced ripening explains why careful temperature control is needed.
Thus, R is the correct explanation of A.
Step 3: Final Answer:
Thus, both A and R are correct and R is the correct explanation of A, which corresponds to option (A).
[0.5cm]
This question tests knowledge of postharvest management of fruits, specifically hot water treatment.
Step 2: Detailed Explanation:
Assertion A:
Hot water treatment (HWT) is indeed effective in controlling postharvest diseases.
It reduces fungal and bacterial pathogens on fruit surfaces.
Used for mango, papaya, citrus, etc.
This statement is true.
Reason R:
Hot water treatment improves lignification in outer layers, making them more resistant to pathogen entry.
However, in some cases, it can enhance ripening and reduce shelf life due to heat stress.
This statement is true.
Relationship between A and R:
R explains A by describing the mechanism of action:
- Lignification provides resistance to disease.
- The trade-off of enhanced ripening explains why careful temperature control is needed.
Thus, R is the correct explanation of A.
Step 3: Final Answer:
Thus, both A and R are correct and R is the correct explanation of A, which corresponds to option (A).
[0.5cm]
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