Biology Environmental Issues Biomagnification Eutrophication Online Exam Quiz
Biology Environmental Issues Biomagnification Eutrophication GK Quiz. Question and Answers related to Biology Environmental Issues Biomagnification Eutrophication. MCQ (Multiple Choice Questions with answers about Biology Environmental Issues Biomagnification Eutrophication
What is the acceleration in the natural aging process of the lake due to the release of effluents from the industries called?
Options
A : Accelerated Eutrophication
B : Eutrophication
C : Sedimentation
D : Bioamplification
Which of the following is the test to the determine amount of oxygen needed to oxidize all pollution materials?
Options
A : Biological Oxygen Demand
B : Chemical Oxygen Demand
C : Botanical Oxygen Demand
D : Physical Oxygen Demand
What is the reason for the reduction in dissolved oxygen?
Options
A : Bio-magnification
B : Eutrophication
C : Extinction
D : Pollution
What is the increased productivity of ponds and lakes due to excess nutrients called?
Options
A : Bio-magnification
B : Extinction
C : Eutrophication
D : Deforestation
When do the planktonic algae utilize oxygen?
Options
A : Day
B : Afternoon
C : Evening
D : Night
What happens to the concentration of DDT in each trophic level?
Options
A : Decrease
B : Increases
C : Remains unchanged
D : Becomes zero
What phenomenon occurs due to the accumulation of certain pollutants that increase in concentration along the food chain?
Options
A : Eutrophication
B : Pollution
C : Deforestation
D : Bio-magnification
What happens when phosphorus, nitrates, and detergents in water lead to an acceleration in the growth of algae?
Options
A : Extinction
B : Eutrophication
C : Increase in the number of fishes
D : Increase in the number of aquatic plants
What happens when water is deoxygenated due to algal growth?
Options
A : Increase in the number of fishes
B : Increase in the number of aquatic plants
C : Eutrophication
D : Death of aquatic animals
How is the value of COD compared to BOD?
Options
A : Much higher
B : Zero
C : Much lower
D : Low
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