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Question
Which is not a bioindicator of water pollution?
Which is not a bioindicator of water pollution?
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Solution
The correct option is A Blood worms
Stoneflies are the aquatic insects that also live on land as adults. These lay their eggs in water and the larvae hatch in the water itself. These larvae are highly sensitive to water pollution as they need a high concentration of dissolved oxygen to respire. They also show sensitivity to the temperature and as the temperature rises, they begin to die. So, when the water is polluted and has low dissolved oxygen and high temperature due to decomposition, the stoneflies will not be seen. Similarly, overgrowth of sewage fungi and sludge worms in the water body indicates a high concentration of organic pollution. Bloodworms are the endoparasite in the human body. Hence, the correct answer is 'Bloodworms'.
Stoneflies are the aquatic insects that also live on land as adults. These lay their eggs in water and the larvae hatch in the water itself. These larvae are highly sensitive to water pollution as they need a high concentration of dissolved oxygen to respire. They also show sensitivity to the temperature and as the temperature rises, they begin to die. So, when the water is polluted and has low dissolved oxygen and high temperature due to decomposition, the stoneflies will not be seen. Similarly, overgrowth of sewage fungi and sludge worms in the water body indicates a high concentration of organic pollution. Bloodworms are the endoparasite in the human body.
Hence, the correct answer is 'Bloodworms'.
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