Which one of the following organism is used as indicator of water quality ?
Which one of the following organism is used as indicator of water quality ?
A. Beggiatoa
B. Chlorella
C. Azospirillum
D. Escherichia
4 views
1 Answers
Correct Answer - D
A variety f the enteric group of bacteria (facultative , aerobic) reside in the human large intestine (e.g. E. coli). Therefore, their presence in water supply indicates that water supply has been contaminated by sewage.
4 views
Answered