In a polluted lake,the index of pollution is

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The index of pollution in a water body is primarily determined by the $BOD$ (Biochemical Oxygen Demand) and the presence of specific bioindicator

Vedclass · Accepted Answer

$BOD$ and Daphnia

Vedclass · Answer

(A) The index of pollution in a water body is primarily determined by the $BOD$ (Biochemical Oxygen Demand) and the presence of specific bioindicator organisms. $BOD$ measures the amount of dissolved oxygen required by aerobic microorganisms to decompose organic matter in water; higher $BOD$ indicates higher pollution. $Daphnia$ (water fleas) are sensitive to water quality and are widely used as bioindicators to assess the level of pollution in aquatic ecosystems. Therefore,$BOD$ and $Daphnia$ serve as reliable indicators of pollution.

Similar Questions

Which of the following is not a biological indicator of water pollution?

Which of the following acts as a secondary pollutant?

Which one of the following represents natural pollutants?

Some effects of sulphur dioxide $(SO_2)$ and its transformation products on plants include:

Why does fish mortality occur due to eutrophication?

Vedclass Test Series

Exam Paper Generator

Online Exam Module