Question # 1

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

Choose an answer

Nitrogen

Oxygen

Carbon Di oxide

Hydrogen

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

Choose an answer

Two

three

Four

Five

Carbon cycle and ............. cycle are teh processes in whihc these minerals circulate between the organisms and the environment.

Choose an answer

Hydrogen

Iodine

Oxygen

Nitrogen

Th graphical epresentation of tropihic relationship oforaganisms in an ecosystem is called.

Choose an answer

Food Chian

Ecological pyramid

Trophic level

Predation

The phenomenon which doe snot lead to global warming.

Choose an answer

Green hous effect

Ozone depletion

Deforestation

Photosynthesis

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

Choose an answer

Moon

Atom

Sun

Earth

Which is the solution of environmental problems.

Choose an answer

Reducing pollution

Plantation

Protection of endangered

All these

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

Choose an answer

Tertiary consumers

Primary consumers

Producers

Secondary consumers

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

Choose an answer

Producers

Primary canivores

Herbivores

Top carnivores

Which factor is responsible for ecological imbalance.

Choose an answer

Over hunting

Change in water supply

Migration

All these

The organisms upon whihc a redator feeds are called.

Choose an answer

Prey

Carnivores

Herbivores

Producers

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

Choose an answer

Oxygen

Carbon dioxide

Nitrogen

Hydrogen

Half of the increase in atmospheric carbon dioxide concentrations in the last.............. years has occured since 1980

Choose an answer

100

200

300

400

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

Choose an answer

Food web

Ecologicla pyramid

Tropicla level

None of these

A relationship where two species live together closely is called

Choose an answer

Symbiosis

Predation

Competitor

None of these

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

Choose an answer

Nitrogen

Oxygen

Carbon di oxide

Hydrogen

More Classes

Other Links

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

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer