Question # 1

Only 30% of the earth is dry land the remainder being covered with

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Water

Air

Trees

Grass

Northern coniferous forest are called.

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Alpine

Boreal

Taiqa

Prairles

The study of hman populations and things that affect them is called:

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Angiography

Demography

Mammography

Homography

In aquatic ecosystem , near shore zone is called.

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Limnetic zone

Littoral zone

Profundal zone

Benthic zone

Here, light is insufficient to support photosynthesis.

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Littoral zone

Profundal zone

Limetic zone

Photoplankton zone

The productivity of aquatic ecosystem is determined by light and

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CO2

Temperature

Nutrients

Water

Each nuclear power station only can last for about

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10 years

20 years

30 years

40 years

The decline in thickness of the ozone layer is caused by increasing level of

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Chlorofluorocarbon

Nitrogen

Chlorine

Carbon dioxide

A dominant plant of the deciduous forest is the

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Cactus

Acacia

euphorbia

Taxusbaccata

The earth surface covered with water is

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35%

11%

21%

33%

Oxone molecule is made up by binding of three atoms of

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Nitrogen

Oxygen

Hydrogen

Carbon

The amount of energy left plants have met their respiratory needs is net eprimary production , which shows up as plant:

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Respiration rate

Photosynthesis

Biomass

Food reserve

Air is being polluted rapidly due to

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Industrialization

Automobiles

Sewage

Both a & b

Ecosystem present on land or soil is called.

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Terrestrial

Atmosphere

Lithosphere

Both a and c

The producers in limnetic zone are

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Amoebae

Cyanobacteria

Crustaceans

Hydrilla

In oceans especially in tropical regions temperature of surface water is about

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10^oC

15^oC

25^oC

35^oC

Fresh water ecosystem covers less than.

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1%

3%

5%

7%

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Biology FSC Part 2 Chapter 26 Online MCQ's Test MCQs With Answers

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