Question # 1

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

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Water

Air

Trees

Grass

The productivity can be indicated by.

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Consumption of CO2

Consumption of O2

Evolution of CO2

Evolution of N2

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

Temperate deciduous forest are located in Pakistan at.

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Chilas

Mian wali

Shogran

Sindh

Perhaps the most fragile of all the biomes, because of its short growing season is.

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Tundra

Desert

Grass land

Temperate deciduous forest

Each nuclear power station only can last for about

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10 years

20 years

30 years

40 years

Here, light is insufficient to support photosynthesis.

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Littoral zone

Profundal zone

Limetic zone

Photoplankton zone

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

As CFC_s rise to the atmosphere ultraviolet rays release

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Fluorine

Chlorine

Carbon

Hydrogen

In Sindh, the desert ecosystem is called.

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Thar

Sahara

Gobi

thal

Coniferous forest located at high latitude are called.

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Alpine

Boreal

Talga

Prairies

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

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Chlorofluorocarbon

Nitrogen

Chlorine

Carbon dioxide

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

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Angiography

Demography

Mammography

Homography

Northern coniferous forest are called.

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Alpine

Boreal

Taiqa

Prairles

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

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10^oC

15^oC

25^oC

35^oC

A dominant plant of the deciduous forest is the

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Cactus

Acacia

euphorbia

Taxusbaccata

Mountain of Karakoram are located in major terrestrial ecosystem in Pakistan.

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Grass land

tundra

Coniferous alpine forest

Temperate deciduous forest

Lavering is the characteristic of.

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Tundra

Desert

Grass land

Talga

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

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