Question # 1

Water used for industrial purposes is about

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9%

90%

70%

50%

Coniferous forest located at high latitude are called.

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Alpine

Boreal

Talga

Prairies

Which statement defines the net primary production in an ecosystem over a given time period?

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The total amount of organic matter in the plants in excess of that used in respiration

The total amount of organic matter used in respiration by all the organisms present

The total amount of photosynthesis product from all plants

The total amount of organic matter in all organisms present

The best way to increase food production from ecosystem view point is:

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To increase cultivable land by clearing forest

Use of excessive fertilizers

Use of high quality pesticides

Use of genetically improved varieties of seeds

Each nuclear power station only can last for about

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10 years

20 years

30 years

40 years

What would be expected to happen if all the nitrogen-fixing organisms ceased to exist?

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There would be no significant change in number of animals

The total number of biomass would be reduced

All organisms would die out

The nitrogen level of the atmosphere would be increase

Modern man is called

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Homo erectus

Homo habilis

Homo sapiens

Homo neanderthalensis

Oxone molecule is made up by binding of three atoms of

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Nitrogen

Oxygen

Hydrogen

Carbon

The biome, which has very fertile soil, rich in organic matter with maximum water holding capacity is.

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Alpine forest

Grassiland

Desert

Temperate deciduous forest

Which of the following is NOT recycled in ecosystem?

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Carbon

Sulphur

Energy

Water

The arctic tundra stretches acroos Northern North America, Northern Europe and.

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cyprus

Siberia

Morocco

Nepal

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

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10^oC

15^oC

25^oC

35^oC

At the time of independence in 1947 the population of pakistan was

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10 m

20 m

25.7 m

32.5 m

The productivity of aquatic ecosystem is determined by light and

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CO2

Temperature

Nutrients

Water

Air is being polluted rapidly due to

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Industrialization

Automobiles

Sewage

Both a & b

Chilas has major terrestrial ecosystem.

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Deciduous forest

Alpine Forest

Grass land

Tundra

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

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Water

Air

Trees

Grass

A natural process in which surface soil is removed by the action of water or wind is

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Corrosion

Attrition

Erosion

Weathering

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

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