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Online Tests
Science 8th Class Urdu Medium Chapter 1 Online Test MCQs With Answers
Question # 1
A symbiotic relationship in whihc both speciesl get benefit is called.
Choose an answer
Commensalism
Hebitate
Mutualism
Symbiosis
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Question # 2
The energy of the Sun in traped as chemical energy by.
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Tertiary consumers
Primary consumers
Producers
Secondary consumers
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Question # 3
Green house gases is
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Carbon di oxide
Methane
Oxides of nitrogen
All these
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Question # 4
A relationship where two species live togetehr closely is called.
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Mutualism
Commensalism
Symbiosis
Hebitate
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Question # 5
The phenomenon which doe snot lead to global warming.
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Green hous effect
Ozone depletion
Deforestation
Photosynthesis
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Question # 6
Th graphical epresentation of tropihic relationship oforaganisms in an ecosystem is called.
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Food Chian
Ecological pyramid
Trophic level
Predation
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Question # 7
The organisms upon whihc a redator feeds are called.
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Prey
Carnivores
Herbivores
Producers
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Question # 8
Carbon cycle and ............. cycle are teh processes in whihc these minerals circulate between the organisms and the environment.
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Hydrogen
Iodine
Oxygen
Nitrogen
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Question # 9
Consumers that actively hunt other organism are called.
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Prey
Competitor
Predator
Symbiont
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Question # 10
Half of the increase in atmospheric carbon dioxide concentrations in the last.............. years has occured since 1980
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100
200
300
400
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Question # 11
During the combustion of fossil fuel. Which gas is ener the atmosphere.
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Nitrogen
Oxygen
Carbon di oxide
Hydrogen
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