Q. No.The colonisation of tropical Pacific Islands by humans is said to have led to the extinction of more than
(1) 5000 species of native birds
(2) 2000 species of native birds
(3) 1500 species of mammals
(4) 3500 species of mammals
(1) 5000 species of native birds
(2) 2000 species of native birds
(3) 1500 species of mammals
(4) 3500 species of mammals
Which of the following data is not according to IUCN Red List (2004)?
(1) Vertebrates-338
(2) Invertebrates-359
(3) Plants-87
(4) Bacteria-104
The extinctions of 784 species recorded in IUCN Red List (2004) happened over
(1) Last 240 years
(2) Last 500 years
(3) Last 300 years
(4) Last 400 years
Which of the following is wrongly matched recent extinction?
(1) Dodo-Mauritius
(2) Quagga-Africa
(3) Thylacine-Australia
(4) Steller's Sea Cow- Stanford
Which of the following is not recently extincted subspecies of tiger?
(1) Bali
(2) Javan
(3) Caspian
(4) Sumata
The last twenty years or so have witnessed the disappearance of at least
(1) 27 species
(2) 40 species
(3) 12 species
(4) 7 species
Which of the following is not correct regarding extinction of species?
(1) Some groups like fishes appear to be more vulnerable to extinction
(2) More than 15500 species world-wide are facing the threat of extinction
(3) Presently, 12 per cent of all bird species in the world face the threat of extinction.
(4) Both B and C
Which of the following is not correct regarding vulnerability data of different groups?
(1) Birds-12 per cent
(2) Mammals- 23 per cent
(3) Amphibians- 27 per cent
(4) Gymnosperms- 31 per cent
Fossil records suggest that
(1) Large scale of loss of species have happened earlier even before humans appeared on Earth
(2) Large scale of loss of species have happened earlier within 1000 years of human evolution
(3) Large scale of loss of species have happened earlier just after humans appeared on Earth
(4) Large scale of loss of species have happened within 100 years of human evolution.
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