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Q. No.What is the main objective of conservation biologists when they employ ex-situ conservation?
1. Protecting species in their natural habitats
2. Conserving species with high threat of extinction
3. Implementing sustainable farming practices
4. Creating wildlife reserves
Subtopic: Ex Situ Conservation of Biodiversity |
87%
From NCERT
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The number of mega-diversity countries in the world are [choose the NCERT number as your answer]:
| 1. | 4 | 2. | 8 |
| 3. | 12 | 4. | 17 |
Subtopic: Magnitude of Biodiversity |
92%
From NCERT
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The largest extinct carnivore marsupial, thylacine, was a native of:
1. Brazil
2. South Africa
3. Peru
4. Australia
1. Brazil
2. South Africa
3. Peru
4. Australia
Subtopic: Loss of Biodiversity |
88%
From NCERT
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What percentage of world oxygen is thought to be created by Amazonian Rain Forests?
1. 10
2. 20
3. 50
4. 90
1. 10
2. 20
3. 50
4. 90
Subtopic: Biodiversity Conservation |
88%
From NCERT
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The search for valuable chemical and biological products in natural biological resources is called as:
1. Biopiracy
2. Bioremediation
3. Bioinformatics
4. Bioprospecting
1. Biopiracy
2. Bioremediation
3. Bioinformatics
4. Bioprospecting
Subtopic: Biodiversity Conservation |
81%
From NCERT
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One aquarium has 10 different species of fish, 3 species of plankton, and 5 species of seaweeds. The other aquarium has 2 turtles of the same species and 100 fishes of same species. What can be said regarding the two aquariums?
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | The first aquarium has more species diversity than the second aquarium. |
| II: | Over time, the community within second aquarium will be more stable than first aquarium. |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Biodiversity Patterns |
75%
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‘Increased biodiversity allows species to interact with each other in a useful manner, which makes the ecosystem more stable overall’. This statement can be attributed to:
1. David Tilman
2. Paul Ehrlich
3. Robert Constanza
4. Tansley
1. David Tilman
2. Paul Ehrlich
3. Robert Constanza
4. Tansley
Subtopic: Importance of Biodiversity |
84%
From NCERT
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Presently, what percent of all mammal species in the world face the threat of extinction?
1. 12
2. 23
3. 31
4. 32
1. 12
2. 23
3. 31
4. 32
Subtopic: Loss of Biodiversity |
78%
From NCERT
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How many episodes of mass extinction of species have occurred before the current ongoing episode?
1. 3
2. 4
3. 5
6. 6
1. 3
2. 4
3. 5
6. 6
Subtopic: Loss of Biodiversity |
85%
From NCERT
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Steller’s sea cow and passenger pigeon got extinct due to:
1. Habitat loss
2. Over-exploitation by humans
3. Alien species
4. Extinction of their food sources
1. Habitat loss
2. Over-exploitation by humans
3. Alien species
4. Extinction of their food sources
Subtopic: Loss of Biodiversity |
93%
From NCERT
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