Q. Escherichia coli is used as an indicator organism to determine pollution of water with
A) Industrial effluents
B) Pollen of aquatic plants
C) Heavy metals
D) Faecal matter
Explanation
E.coli resides in the large intestine of human. Therefore, if these are present in water supply, it can be guessed that water supply has been contaminated by sewage.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.