Question # 1

--------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

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

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Moon

Atom

Sun

Earth

The energy of the Sun in traped as chemical energy by.

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Tertiary consumers

Primary consumers

Producers

Secondary consumers

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

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Oxygen

Carbon dioxide

Nitrogen

Hydrogen

Which is the solution of environmental problems.

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Reducing pollution

Plantation

Protection of endangered

All these

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

Green house gases is

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Carbon di oxide

Methane

Oxides of nitrogen

All these

A relationship where two species live togetehr closely is called.

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Mutualism

Commensalism

Symbiosis

Hebitate

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

Which factor is responsible for ecological imbalance.

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Over hunting

Change in water supply

Migration

All these

All the food chains are joined together to form .....

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Food web

Ecologicla pyramid

Tropicla level

None of these

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

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Two

three

Four

Five

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

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Food Web

Food chain

Trophical level

Secession level

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

A symbiotic relationship in whihc both speciesl get benefit is called.

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Commensalism

Hebitate

Mutualism

Symbiosis

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