Question # 1

The producers in limnetic zone are

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Amoebae

Cyanobacteria

Crustaceans

Hydrilla

What will be the age of willow tree 10 centimeter long and 70 centimeter in diameter

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40 years

50 years

60 years

70 years

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

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cyprus

Siberia

Morocco

Nepal

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

A pesticide is a chemical which destroys agricultural

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Pests

Competitors

Crops

Both a & b

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

Limetic phytoplankton include the.

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Bacteria

Cyanobacteria

Fishes

Mouses

The Macacamulatta isbiological name for

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Black bear

Cat

Rhesus monkey

Deer

Oxone molecule is made up by binding of three atoms of

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Nitrogen

Oxygen

Hydrogen

Carbon

In Sindh, the desert ecosystem is called.

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Thar

Sahara

Gobi

thal

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

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Grass land

tundra

Coniferous alpine forest

Temperate deciduous forest

As CFC_s rise to the atmosphere ultraviolet rays release

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Fluorine

Chlorine

Carbon

Hydrogen

Modern man is called

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Homo erectus

Homo habilis

Homo sapiens

Homo neanderthalensis

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

Fresh water ecosystem covers less than.

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1%

3%

5%

7%

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

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10^oC

15^oC

25^oC

35^oC

Air is being polluted rapidly due to

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Industrialization

Automobiles

Sewage

Both a & b

The zone, rich in life, in a fresh water lake is called.

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Littoral zone

Profundal zone

Limnetic zone

Deseret

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

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