Q. No.Which of the following is not a part of Evil Quartet?
(1) Habitat loss and Fragmentation
(2) Dosage compensation
(3) Alien Species Invasions
(4) Co-extinctions
(1) Habitat loss and Fragmentation
(2) Dosage compensation
(3) Alien Species Invasions
(4) Co-extinctions
The most important cause driving animals and plants to extinction in the Evil Quartet is
(1) Habitat loss and Fragmentation
(2) Over-Exploitation
(3) Alien Species Invasions
(4) Co-extinctions
Which of the following give the most dramatic examples of habitat loss?
(1) Tropical Rain forest
(2) Temperate Deciduous forest
(3) Temperate Evergreen forest
(4) Grasslands
Once covering more than ……. of the Earth's land surface, these rain forests now cover no more than……
(1) 17,10
(2) 14,6
(3) 12,4
(4) 7,3
Amazon Rain Forests
Which of the following is wrong?
(1) Huge and called lungs of Planet
(2) Harbour millions of species
(3) Amazon forests were being cut and cleared for cultivation of Brassica
(4) Conversion to grasslands and for raising beef cattle among the other reasons for cutting of Amazon forests
Which of the following is not correct about Fragmentation?
(1) Large habitats are broken up into small fragments due to various human activities
(2) Mammals and birds are affected by fragmentation as they need large territory
(3) Certain animals with migratory habits are badly affected leading to population decline
(4) The main reason for the cause of fragmentation is soya bean cultivation
Which of the following are the extinctions caused by over exploitation for the last 500 years?
(1) Steller's Sea cow
(2) Passenger Pegion
(3) Dodo
(4) Both A and B
Which of the following is wrong information about consequence of Alien Species Invasions?
(1) Nile Perch - Alien Species
(2) Lake Victoria in East Africa - the ecosystem in which h alien species was introduced
(3) Cichlid fish: Extincted species
(4) Number of extincted species: 176
Which of the following is not an example of Alien species for our ecosystems?
(1) Carrot Grass
(2) Indigenous catfishes
(3) Lantana
(4) Eichhornia
The recent illegal introduction of the African catfish……..for aquaculture puposes is posing a threat to the indigenous catfishes of our Rivers
(1) Clarius gariepinus
(2) Cichlid fishes
(3) Parthenium
(4) Steller's Sea cow
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