Question # 1

------------- 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

During the combustion of fossil fuel. Which gas is ener the atmosphere.

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Nitrogen

Oxygen

Carbon di oxide

Hydrogen

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

The phenomenon which doe snot lead to global warming.

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Green hous effect

Ozone depletion

Deforestation

Photosynthesis

A relationship where two species live together closely is called

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Symbiosis

Predation

Competitor

None of these

A relationship where two species live togetehr closely is called.

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Mutualism

Commensalism

Symbiosis

Hebitate

--------occupy the b ase of pyramid.

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Producers

Primary canivores

Herbivores

Top carnivores

Ozone is a layer of gases in ............. atmosphere of the Earth.

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Upper

Lower

Middle

Inner

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

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Primary carnivores

Herbivores

Producers

Top carnivores

------------- gas is released when dead organisms are decomposed by the decomposers.

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Oxygen

Carbon dioxide

Nitrogen

Hydrogen

The feeding level of an organism in an ecosystem is called.

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Food Web

Food chain

Trophical level

Secession level

Which factor is responsible for ecological imbalance.

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Over hunting

Change in water supply

Migration

All these

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

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Moon

Atom

Sun

Earth

Which is the solution of environmental problems.

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Reducing pollution

Plantation

Protection of endangered

All these

The poisonous and harmsful substances which make the air unfavorable for life are called.

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Solid pollutant

Air pollutant

Water pollutant

Acid Rain

The organisms upon whihc a redator feeds are called.

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Prey

Carnivores

Herbivores

Producers

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