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MCQ on Ecology and Environment

1. Increase in concentration of the toxicant at successive trophic level is known as
A. Biotransfomation
B. Biomagnification
C. Biogeochemical cycling 
D. Biodeterioration
Ans: B.Biomagnification
2.Which one of the following combination is wrong?
A.Rio convention – Air pollution
B. Kyoto Protocol – Climate Change
C.Montreal Protocol- Ozone Depletion
D. Ramsar convention-Wetland conservation
Ans: A.Rio convention – Air pollution
3. Example of secondary air pollutant is/ are
A. Smog
C. O3
D.All of these
Ans: D.All of these
4. Ionosphere is between  

A. Stratospere and mesosphere
B. Mesospere and thermosphere
C. Trophosphere and stratospere
D. Trospere and thermospere
Ans: B.Mesospere and thermosphere
5. Photochemical smog always contains
 A. O3
D. All of these
Ans: A. O3
6. The polluting strength of sewage is usually characterized by
A. Eutrophication
B.Nitrogen content
C.Ozone content
Ans:D. BOD
7. The term ecosystem was coined by
 A. E. haeckel
B. E. Warming
C.E P Odum
D. AG Tansley
                                                                                                    Ans: D. AG Tansley
8.How many hotspot of biodiversity in the world have been identified till date by Norman Myers?
 A. 17
B. 34
C. 25
D. 43
                                                                                                                                                 Ans: B. 34 
9. What is the National aquatic animal of India?
A. Blue whale
B. Sea horse
C. Gangetic Shark
D. River Dolphin
                                                                                                       Ans: D. River Dolphin  
10. Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers?
 A. Ammonia
B. Ozone
D. Nitrous oxide
                                                                                                                  Ans: B. Ozone  

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