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Forestry MCQs with Explanations

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271ForestryMedium

In a stabilized ecosystem the P/R ratio is:

AOne

BAny of these

CMore than one

DLess than one

Correct answer

A. One

Explanation

The correct answer is One.

272ForestryMedium

In big cities, air pollution is mainly due to:

ABurning of fossil fuel

BSewage

CThermal power plants

DSuspended particles

Correct answer

A. Burning of fossil fuel

Explanation

The correct answer is Burning of fossil fuel.

273ForestryMedium

Forest fires cause millions of rupee of damage each year to the forest. Within the span of a few hours, hard work of generations of forest officers can be ruined. Causes of fires is / are :

ABurning of grass by graziers for the sake of the tender grass, which comes up after a fire

BAll of the above

CBurning of grass and undergrowth along patches frequented by villagers for easy passage

DFires caused by sparks from locomotive engines passing through the forest

EBurning to facilitate the collection of minor produce

Correct answer

B. All of the above

Explanation

The correct answer is All of the above.

274ForestryMedium

If organisms are arranged according to predator-prey relationship one always finds more of prey species then of predator. This is called a:

APyramid of numbers

BSuccession

CFood web

DPredator-prey relationship

Correct answer

A. Pyramid of numbers

Explanation

The correct answer is Pyramid of numbers.

275ForestryMedium

Lean varies with:

ATimber breakage and hang-up are more

BSlope and affects cutting operations

CNone of these

DBoth (a) & (b)

Correct answer

D. Both (a) & (b)

Explanation

The correct answer is Both (a) & (b).

276ForestryMedium

Sometimes sound and uninjured seeds may fail to germinate due to reduced activity of the seed or seed parts resulting in blockade of the growth. This may be due to:

ANone of these

BBoth (a) & (b)

CInternal conditions within the plant itself, i.e. Embryo dormancy or seed coat dormancy

DExternal effects of environment

Correct answer

B. Both (a) & (b)

Explanation

The correct answer is Both (a) & (b).

277ForestryMedium

The pyramid that cannot be inverted in a stable ecosystem is the pyramid of:

ABiomass

BAll of these

CNumber

DEnergy

Correct answer

D. Energy

Explanation

The correct answer is Energy.

278ForestryMedium

A watershed may be just be small depression of the land or it may comprise whole sub-continents as for the large river basins of the earth:

AIndus

BAmazonas

CWolga

DAll of the above

EGanges

Correct answer

D. All of the above

Explanation

The correct answer is All of the above.

279ForestryMedium

Phulai (Acacia modesta) utilization of timber:

ACharcoal of high calorific value agricultural implements

BBoth (a) & (b)

CFuel wood

DNone of these

Correct answer

B. Both (a) & (b)

Explanation

The correct answer is Both (a) & (b).

280ForestryMedium

The cooler sandstone aspect has occasional trews of:

Acolitis sp

BAll of the above

CAcacia modesta

Dolea sp

Correct answer

B. All of the above

Explanation

The correct answer is All of the above.

Forest fires cause millions of rupee of damage each year to the forest. Within the span of a few hours, hard work of generations of forest officers can be ruined. Causes of fires is / are :

ABurning of grass by graziers for the sake of the tender grass, which comes up after a fire

BAll of the above

CBurning of grass and undergrowth along patches frequented by villagers for easy passage

DFires caused by sparks from locomotive engines passing through the forest

EBurning to facilitate the collection of minor produce

Correct answer

B. All of the above

Explanation

The correct answer is All of the above.