Eutrophication O Level Biology MCQs Test Online PDF Download

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MCQ on Eutrophication O Level BiologyQuiz PDF Download

MCQ: Submerged algae and plants die due to

  1. death of fish on which they feed
  2. less water available for them
  3. less oxygen in water
  4. blockage of sunlight due to profuse growth

D

MCQ: Eutrophication is a

  1. good sign for ecosystem
  2. bad sign for ecosystem
  3. neutral sign for ecosystem
  4. dual-sided sign for ecosystem

B

MCQ: Use of chemical fertilizers causes

  1. gaseous pollution
  2. water pollution
  3. air pollution
  4. all of these

B

MCQ: Dead algae and plants are decomposed by

  1. bacteria
  2. fungi
  3. virus
  4. detritivores

A

MCQ: Profuse growth of bacteria result in

  1. death of algae
  2. death of aquatic plants
  3. death of fish
  4. lesser nutrients in water

C