Human and Environment Mcqs

This Set of Multiple choice questions and answers focuses on study of Human and Environment in Biology. These questions are chosen from a collection of most authoritative and best reference books on Biology. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Medicine industry job interviews. One should practice our Mcqs to assimilate knowledge on Human and Environment comprehensively.

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Process that supplies food to living things through decaying and decomposition is called

Food cycle

Nutrient cycle

Dead-live cycle

None of these

Balance in the nutrient cycle can be upset when

Too much food is consumed

Not enough food is produced

Decayed nutrients are not returned to the ground

All of these

In air % of oxygen and carbon dioxide is

Oxygen 20%, CO2 0.03%

Oxygen 50%, CO2 50%

Oxygen 30%, CO2 0.05%

Oxygen 25%, CO2 0.02%

Which statement is true?

20% of total water is in the form of frozen ice caps

80% is in oceans

1% as fresh water lakes, streams and rivers

10% is in canals

Wild life refers to

All plants of the world

All non cultivated plants

Non domesticated animals

Both b and c

Endangered species are

Dangerous for the life of humans

Reduced in number

Already extinct

All of these

Which sequence is correct?

Dead plants?lignite?peat?coal

Dead plants?peat?lignite?coal

Dead plants?coal?lignite?ash

Dead animals?peat?lignite?coal

Hydroelectricity is generated by using ______ of falling water.

Potential energy

Gravitational energy

Kinetic energy

All of these

Tides are caused by

Gravitational pull of sun

Movements of large animals in water

Uneven water body floor

High winds

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