Ecology: O level Biology Learning App | IGCSE O Level Biology MCQs e-Book PDF

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IGCSE O Level Biology MCQs – Practice Test 9 (Chapter 6)

Ecology: O level Biology MCQs with Answers PDF Download – Test 9

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Ecology O level Biology MCQs with Answers PDF Download: MCQ Quiz 9

MCQ 41: During night, the fresh water is made more acidic due to:

  1. onset of photosynthesis
  2. caesura of photosynthesis
  3. onset of respiration
  4. onset of transpiration

MCQ 42: In any ecosystem, the form of energy that can not be recycled is:

  1. light energy
  2. chemical energy
  3. heat energy
  4. mechanical energy

MCQ 43: Group of organisms of the same species living undefined are/is called:

  1. population
  2. community
  3. kingdom
  4. phylum

MCQ 44: In strong day light, fresh water (H2) is:

  1. more alkaline
  2. more acidic
  3. neutral
  4. salty

MCQ 45: Survival of aquatic organisms only in their environment is an example of:

  1. high specialization
  2. less specialization
  3. adaptation
  4. metabolism

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