Q. No.Biodiversity loss is now one of the world’s most pressing crisis. The primary reason for this is that:
| 1. | we cannot do anything about it |
| 2. | we are not responsible for this loss |
| 3. | we still do not know its entire extent |
| 4. | it is only affecting the developing countries |
Subtopic: Importance of Biodiversity | Loss of Biodiversity |
72%
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Subtopic: Loss of Biodiversity |
84%
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Identify the incorrectly matched pair:
|
1. |
Dodo |
Mauritius |
|
2. |
Quagga |
Africa |
|
3. |
Thylacine |
Australia |
|
4. |
Stellar’s sea cow |
USA |
Subtopic: Loss of Biodiversity |
93%
From NCERT
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Match each picture in Table I with the name of the organism in Table II and select the correct match from the codes given.
| Table I | |||
| A |  |
B |  |
| C |  |
D |  |
| Table II | |||
| P | Thylacine | Q | Dodo |
| R | Quagga | S | Steller’s sea cow |
| A | B | C | D | |
| 1. | Q | R | S | P |
| 2. | Q | R | P | S |
| 3. | P | Q | R | S |
| 4. | P | S | Q | R |
Subtopic: Loss of Biodiversity |
83%
From NCERT
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Which of the following species of tiger has not gone extinct?
| 1. | Bali | 2. | Javan |
| 3. | Caspian | 4. | Siberian |
Subtopic: Loss of Biodiversity |
89%
From NCERT
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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 |
Subtopic: Loss of Biodiversity |
77%
From NCERT
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the most appropriate answer from the options given below :
| Assertion (A): | The current mass extinction is different from the previous episodes of mass extinctions. |
| Reason (R): | It is happening at a faster rate and is mainly anthropogenic in nature. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Loss of Biodiversity |
88%
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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 |
Subtopic: Loss of Biodiversity |
72%
From NCERT
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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 |
Subtopic: Loss of Biodiversity |
89%
From NCERT
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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.
Subtopic: Loss of Biodiversity |
From NCERT
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