- 1(current)
Q. No.Identify the incorrectly matched pair:
|
1. |
Dodo |
Mauritius |
|
2. |
Quagga |
Africa |
|
3. |
Thylacine |
Australia |
|
4. |
Stellar’s sea cow |
USA |
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Which of the following species of tiger has not gone extinct?
| 1. | Bali | 2. | Javan |
| 3. | Caspian | 4. | Siberian |
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Which group, amongst the following, has the maximum percentage of species facing threat of extinction?
| 1. | Amphibians | 2. | Birds |
| 3. | Mammals | 4. | Gymnosperms |
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Loss of biodiversity may lead to all except:
1. decline in plant production
2. increased resistance to environmental perturbance
3. increased variability in water use
4. increased variability in pest and disease cycle
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At present, the most important cause driving animals and plants to extinction is:
| 1. | Co-extinctions | 2. | Alien species invasions |
| 3. | Over-exploitation | 4. | Habitat loss and fragmentation |
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Consider the given two statements:
| I: | Fragmentation of habitat is an important cause of extinction of species. |
| II: | Minor fluctuations in climate, resources or other factors can be catastrophic in small, isolated populations. |
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct but II is incorrect.
4. I is incorrect but II is correct.
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Extinction of Stellar’s sea cow and passenger pigeon was due to:
| 1. | Habitat loss and fragmentation | 2. | Over exploitation |
| 3. | Invasion of alien species | 4. | Co-extinctions |
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Lantana camara and Clarias gariepinus are examples of:
| 1. | Invasive species | 2. | Apex predators |
| 3. | Critical link species | 4. | Edge species |
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In a co-evolved highly specific plant-pollinator obligatory mutualism, if one of the members gets extinct, the other most likely:
| 1. | would increase in number but the diversity in the population would reduce |
| 2. | would increase in number and the diversity in the population would increase |
| 3. | would decrease in number and the diversity in the population would reduce |
| 4. | also go extinct |
- 1(current)
Q. No.
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