Question # 1

The productivity of aquatic ecosystem is determined by light and

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CO2

Temperature

Nutrients

Water

In which type of ecosystem in the smallest fraction of nutrients present in soil.

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Forest

Savanna

Grass land

Desert

Lavering is the characteristic of.

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Tundra

Desert

Grass land

Talga

Ecosystem present on land or soil is called.

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Terrestrial

Atmosphere

Lithosphere

Both a and c

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

Which of the following is NOT recycled in ecosystem?

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Carbon

Sulphur

Energy

Water

Northern coniferous forest are called.

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Alpine

Boreal

Taiqa

Prairles

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

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Chlorofluorocarbon

Nitrogen

Chlorine

Carbon dioxide

Clearance of vast areas of forest for lumber planting subsistence crops or grazing cattle is called as

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Deforestation

A-forestation

Forestation

Both a & b

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Biology Fsc Part 2 Chapter 12 Online Test MCQs With Answers

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