Welcome to the Quiz!
This quiz contains 5 questions from a mix of 1 subtopics.
Why are freshwater shrimps and stoneflies considered indicator species for water quality?
They are easy to catch for scientific study
They thrive in polluted water
They contribute to water pollution
They are sensitive and require a clean aquatic ecosystem to survive
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In water quality assessment, why do bloodworms and sludgeworms indicate polluted water?
They thrive in clean water environments
They contribute to the purification of water
They are sensitive to changes in water quality
They are resistant to adverse conditions
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How do lichens act as indicators of air pollution?
By changing colour based on temperature
By being sensitive to pollutants like sulphur dioxide in rainwater
By emitting specific gases in response to pollution
By growing faster in polluted air
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What does the absence of lichens in a particular area often suggest?
Heavy pollution with sulphur dioxide
Presence of excessive nutrients in the air
Ideal conditions for lichen growth
High levels of rainfall
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What is the primary role of indicator species in environmental monitoring?
To serve as sources of food for other species
To provide a visual appeal in ecosystems
To act as early warning signals for environmental conditions
To cause environmental changes
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