Biology · Environmental Biology
The following statements (S1, S2, S3, S4) pertain to Dissolved Oxygen (DO) in surface water. S1: Warm water holds more dissolved oxygen than cold water. S2: Respiration of organisms living in water as well as in sediments causes reduction in the available dissolved oxygen. S3: Water holds less oxygen at higher altitudes. S4: During daytime, photosynthetic activity in surface water leads to a decrease in the dissolved oxygen concentration. Choose the correct statement(s):
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1S1 and S4 only
- 2S2, S3, and S4 only
- 3S1 only
- 4S2 and S3 only✓
Correct answer
S2 and S3 only
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