IGCSE O Level Biology MCQs - Chapter 6

Ecology: O level Biology Multiple Choice Questions (MCQs) PDF Download - 9

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Ecology O level Biology Questions & Answers PDF Download: MCQ Quiz 9

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

onset of photosynthesis
caesura of photosynthesis
onset of respiration
onset of transpiration

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

light energy
chemical energy
heat energy
mechanical energy

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

population
community
kingdom
phylum

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

more alkaline
more acidic
neutral
salty

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

high specialization
less specialization
adaptation
metabolism

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