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Science 8th Class Urdu Medium Chapter 1 Online Test MCQs With Answers

Question # 1

During respiration by the animals, whihc gas is released into the atmosphere.

Choose an answer

Nitrogen

Oxygen

Carbon Di oxide

Hydrogen

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Question # 2

A relationship where two species live togetehr closely is called.

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Mutualism

Commensalism

Symbiosis

Hebitate

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Question # 3

A relationship where two species live together closely is called

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Symbiosis

Predation

Competitor

None of these

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Question # 4

The organisms upon whihc a redator feeds are called.

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Prey

Carnivores

Herbivores

Producers

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Question # 5

A food chain starts from the..........

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Primary carnivores

Herbivores

Producers

Top carnivores

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Question # 6

------------- through the food chain is one of the most important functionsof an ecosystem in maintaining balance of nature.

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Waisting of energy

Destroy fo energy

Transfer of energy

Produce of energy

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Question # 7

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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Question # 8

Organism in ecologicla communits interact with one anothe rin....... major ways.

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Two

three

Four

Five

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Question # 9

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 # 10

Energy of ............ is trapped as chemicla energy by producers.

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Moon

Atom

Sun

Earth

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