Which of the following is the effect of high BOD?

Category: QuestionsWhich of the following is the effect of high BOD?
Editor">Editor Staff asked 4 weeks ago

Which of the following is the effect of high BOD?
 
(a) More birth of aquatic plants
 
(b) More birth of fishes
 
(c) Higher dissolved oxygen
 
(d) Lower dissolved oxygen
 
This question was posed to me by my school teacher while I was bunking the class.
 
My query is from Environmental Issues topic in chapter Environmental Issues of Biology – Class 12

1 Answers
Editor">Editor Staff answered 4 weeks ago

The correct answer is (d) Lower dissolved oxygen
 
The explanation: The high BOD results in the reduction of dissolved oxygen in the water. This is because the maximum amount of oxygen is utilized by microbes in decomposing the organic wastes of water.