Q. No.Which one is not a key criteria for determining a hotspot?
1. Very high levels of species richness.
2. High degree of those species which are confined to that region and not found anywhere else.
3. Degree of threat, which is measured in terms of habitat loss.
4. No habitat loss.
1. Very high levels of species richness.
2. High degree of those species which are confined to that region and not found anywhere else.
3. Degree of threat, which is measured in terms of habitat loss.
4. No habitat loss.
Select the incorrect statement
1. Species diversity decreases as we move away from the equator towards the poles.
2. The IUCN red list (2004) documents the extinction of 784 species in the last 500 years.
3. Amazon rainforest is so huge that it is called the ‘heart of the planet’
4. Extinction of Steller’s sea cow and passenger pigeon were due to their overexploitation by humans.
Choose the incorrect match regarding examples of recent extinctions.
1. Quagga - Africa
2. Steller’s Sea Cow - Russia
3. Dodo - Myanmar
4. Thylacine - Australia
Consider the following statements and state True (T)
contributes to global warming or False (F)
a. The Eastern Ghats have higher amphibian species
diversity than the Western Ghats.
b. Habitat loss and fragmentation is the most
important cause driving animals and plants to
extinction.
c. Loss of biodiversity in a region may lead to lowered
resistance to environmental perturbations.
d. In onsite conservation approaches, biodiversity at
all levels is protected.
A B C D
1. F T T T
2. T F T T
3. F F T T
4. T T T F
More conservative and scientifically sound estimate made by Robert May places the global species diversity at about
1. 1.5 million
2. 7 million
3. 1.7 million
4. 17 million
“When we conserve and protect the whole ecosystem, its biodiversity at all levels in protected.” This approach includes all of the following, except
1. Seed bank
2. Biosphere reserves
3. National parks
4. Sanctuaries
The Earth Summit held in Rio de Janeiro in 1992 was called:
| 1. | for immediate steps to discontinue the use of CFCs that were damaging the ozone layer |
| 2. | to reduce CO2 emissions and global warming |
| 3. | for the conservation of biodiversity and sustainable utilization of its benefits |
| 4. | to assess the threat posed to native species by invasive weed species |
Which one of the following pairs of organisms are exotic species introduced in India?
1. Ficus religiosa. Lantana camara
2. Lantana camara, Water hyacinth
3. Water hyacinth, Prosopis cineraria
4. Nile perch, Ficus religiosa
Which of the following statement is/are correct?
a. As we move on Earth from low to high latitude, the
biodiversity increases.
b. In rivet popper hypothesis given by Paul Ehrlich,
rivets on the wings are considered as key species.
c. India possesses 8.1% species diversity of the world.
1. b and c only
2. b only
3. All a, b and c
4. a and c only
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