Environment & Ecology · Environment

What does B.O.D. (Biochemical Oxygen Demand) signify in relation to water quality?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1The total amount of dissolved oxygen present inherently in a water body
2The amount of oxygen required by aerobic microorganisms to decompose the organic matter present in a water sample✓
3The total concentration of phosphorus and nitrate pollutants present in wastewater
4The rate at which aquatic plants release oxygen during photosynthesis

Correct answer

The amount of oxygen required by aerobic microorganisms to decompose the organic matter present in a water sample

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