Question # 1

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

A relationship where two species live togetehr closely is called.

Choose an answer

Mutualism

Commensalism

Symbiosis

Hebitate

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

Choose an answer

Nitrogen

Oxygen

Carbon Di oxide

Hydrogen

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

Choose an answer

Tertiary consumers

Primary consumers

Producers

Secondary consumers

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

Choose an answer

Food web

Ecologicla pyramid

Tropicla level

None of these

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

Choose an answer

Moon

Atom

Sun

Earth

A relationship where two species live together closely is called

Choose an answer

Symbiosis

Predation

Competitor

None of these

Which is the solution of environmental problems.

Choose an answer

Reducing pollution

Plantation

Protection of endangered

All these

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

Choose an answer

Solid pollutant

Air pollutant

Water pollutant

Acid Rain

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

Choose an answer

Primary carnivores

Herbivores

Producers

Top carnivores

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

Choose an answer

Food Web

Food chain

Trophical level

Secession level

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

Choose an answer

Producers

Primary canivores

Herbivores

Top carnivores

The phenomenon which doe snot lead to global warming.

Choose an answer

Green hous effect

Ozone depletion

Deforestation

Photosynthesis

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

Choose an answer

Nitrogen

Oxygen

Carbon di oxide

Hydrogen

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

Choose an answer

Commensalism

Hebitate

Mutualism

Symbiosis

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

Choose an answer

Food Chian

Ecological pyramid

Trophic level

Predation

More Classes

Other Links

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