Question:
Given below are two statements:
Statement I: Waterlogging causes injury to crops due to low oxygen content and accumulation of hydrocarbon gases, hydrogen sulphide, and carbon dioxide.
Statement II: Ethanol production and activity of dehydrogenase decreases in roots of waterlogged plants.
In light of the above statements, choose the most appropriate answer from the options given below:
Given below are two statements:
Statement I: Waterlogging causes injury to crops due to low oxygen content and accumulation of hydrocarbon gases, hydrogen sulphide, and carbon dioxide.
Statement II: Ethanol production and activity of dehydrogenase decreases in roots of waterlogged plants.
In light of the above statements, choose the most appropriate answer from the options given below:
Statement I: Waterlogging causes injury to crops due to low oxygen content and accumulation of hydrocarbon gases, hydrogen sulphide, and carbon dioxide.
Statement II: Ethanol production and activity of dehydrogenase decreases in roots of waterlogged plants.
In light of the above statements, choose the most appropriate answer from the options given below:
Show Hint
Waterlogging effects:
- Low oxygen, toxic gas accumulation.
- Ethanol production increases (anaerobic respiration).
- Dehydrogenase activity increases.
- Low oxygen, toxic gas accumulation.
- Ethanol production increases (anaerobic respiration).
- Dehydrogenase activity increases.
Updated On: Aug 27, 2026
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of the effects of waterlogging on plants.
Step 2: Detailed Explanation:
Waterlogging causes injury due to low oxygen and accumulation of toxic gases (CO2, H2S, hydrocarbons).
This statement is true.
Ethanol production and dehydrogenase activity increase (not decrease) in roots of waterlogged plants.
This is due to anaerobic respiration.
Thus, Statement II is false.
Step 3: Final Answer:
Thus, Statement I is correct but Statement II is false, which corresponds to option (C).
[0.5cm]
This question tests knowledge of the effects of waterlogging on plants.
Step 2: Detailed Explanation:
Waterlogging causes injury due to low oxygen and accumulation of toxic gases (CO2, H2S, hydrocarbons).
This statement is true.
Ethanol production and dehydrogenase activity increase (not decrease) in roots of waterlogged plants.
This is due to anaerobic respiration.
Thus, Statement II is false.
Step 3: Final Answer:
Thus, Statement I is correct but Statement II is false, which corresponds to option (C).
[0.5cm]
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