Environmental Science

Part 1.

 Q.1.Growing agricultural crops between rows of planted trees is known as

A. Social forestry

B. Jhum

C. Taungya system

D. Agroforestry

Ans. Taungya system


Q.2. Algal bloom results in

A. Global warming

B. Salination

C. Eutrophication

D. Biomagnification

Ans. Euthrophication


Q.3. One of the critical mechanism by which the environment controls population of species is:

A. Spread of disease

B. Removal of excreta

C. Check on death rate

D. Supply of food

Ans. Supply of food


 Q.4. Global atmospheric temperatures are likely to be increased due to:

A. Burning of fossil fuel

B. Water pollution

C. Soil erosion

D. None of the above

Ans. Burning of fossil fuels


Q.5. The average life expectancy around the world is currently:

A. Decreasing

B. Increasing

C. Not changing

D. Stabilizing

Ans. Increasing


Q.6. State with the highest percentage of forests is

A. Arunachal Pradesh

B. Mizoram

C. Assam

D. Uttar Pradesh

Ans. Mizoram


Q.7. The largest unit of living organisms on earth is

A. Ecosystem

B. biome

C. Biosphere

D. Population

Ans. Biosphere
                  

Q.8. World Wildlife Fund was founded in :

A. 1961

B. 1965

C. 1969

D. 1992

Ans. 1961


Q.9. Which one of the chemicals is responsible for the reduction of ozone content of the atmosphere?

A. SO2

B. Chlorofluoro carbon

C. HCl

D. Photochemical smog

Ans. Chlorofluoro carbon


Q.10. Which one of the following is a useful biological indicator of Sulphur-dioxide pollution ?

A. Bryophytes

B. Algal blooms

C. Pseudomonas

D. Lichens

Ans. Lichens



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