Home Biology Ecosystem Structure and Function, Productivity and Decomposition Biological Oxygen Demand (BOD) is a measure …
Biology Ecosystem Structure and Function, Productivity and Decomposition Single Correct MCQ
Published on: August 12, 2026

Biological Oxygen Demand (BOD) is a measure of

A
Industrial wastes poured into water bodies
B
Extent to which water is polluted with organic compounds
C
Amount of carbon monoxide inseparably combined with haemoglobin
D
Amount of oxygen needed by green plants during night

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Text Solution

Verified by Experts
The correct answer is:
B

High BOD: Indicates that there is a high concentration of organic pollutants (such as sewage or industrial waste) in the water. This leads to more microbial activity, which consumes more oxygen, potentially suffocating aquatic life like fish.

Low BOD: Suggests that the water is relatively clean and has a low load of organic waste

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