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Botany - Environmental Issues Question with Solution | TestHub

BotanyEnvironmental IssuesPollutionEasy2 minPYQ_2020

BotanyEasysingle choice

BOD values of different samples of water are given:

Sample A $B O D = 5$ , Sample B $B O D = 12$ , Sample C $B O D = 2$ , Sample D $B O D = 7$

Which of the above-given sample will have the least number ofDaphnia?

Options:

Answer:

Solution:

Daphniais an indicator of freshwater thus it is not found in the polluted water body. Biochemical oxygen demand is the indirect measurement of organic pollutant present in the water body. Higher the value of BOD, higher is its polluting potential.

Stream:NTA_ABHYAS_NEETSubject:BotanyTopic:Environmental IssuesSubtopic:Pollution

⏱ 2mℹ️ Source: PYQ_2020

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