Which one of the following is called as indicator species for polluted waters?

Tubifex

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Phytoplanktons

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Zooplanktons

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Prawns

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Solution

The correct option is A Tubifex
Aquatic oligochaetes are known for their use as water quality indicators, especially in areas with urban and sewage effluent. In particular, the oligochaete species Tubifex is used as a water quality indicator because of its ability to tolerate low oxygen conditions, the presence of heavy metals, and other environmental conditions.
So, the correct answer is option A.

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Similar questions

Q6. Consider the following statements about Sentinel species :

1. Sentinel species do not readily accumulate pollutants.

2. This species serve as indicators of ecosystem health.

Which of the statements are correct?

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