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Q. No.In the Indian context, Lantana camara and Eichhornia crassipes are:
1. Critical link species
2. Keystone species
3. Cash crops
4. Invasive species
Subtopic: Loss of Biodiversity |
93%
From NCERT
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How many of the given statements regarding recent extinctions are true?
| I: | Dodo got extinct from Mauritius |
| II: | Quagga got extinct from Africa |
| III: | Thylacine got extinct from Australia |
| IV: | Stellar's sea cow got extinct from Russia |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
Subtopic: Loss of Biodiversity |
90%
From NCERT
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Which group of vertebrates appears to be more vulnerable to extinction?
| 1. | Fishes | 2. | Mammals |
| 3. | Amphibians | 4. | Birds |
Subtopic: Loss of Biodiversity |
79%
From NCERT
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What led to the extinction of passenger pigeon?
1. Increased number of predatory birds.
2. Over exploitation by humans.
3. Habitat loss
4. H5N1 virus infection.
1. Increased number of predatory birds.
2. Over exploitation by humans.
3. Habitat loss
4. H5N1 virus infection.
Subtopic: Loss of Biodiversity |
86%
From NCERT
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Which Indian plant is the source of antihypertensive drug reserpine?
1. Datura
2. Rauwolfia
3. Atropa
4. Papaver
1. Datura
2. Rauwolfia
3. Atropa
4. Papaver
Subtopic: Importance of Biodiversity |
91%
From NCERT
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| Assertion (A): | When certain exotic species are introduced into a geographical area, they become invasive and start spreading fast. |
| Reason (R): | These exotic species invariably reproduce by asexual means. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True, (R) is False |
| 4. | (A) is False, (R) is False |
Subtopic: Loss of Biodiversity |
60%
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The Conference of Parties (COP) 2024 will be held in:
1. Glasgow, United Kingdom
2. Sharm el Sheikh, Egypt
3. Dubai, UAE
4. Baku, Azerbaijan
1. Glasgow, United Kingdom
2. Sharm el Sheikh, Egypt
3. Dubai, UAE
4. Baku, Azerbaijan
Subtopic: Biodiversity Conservation |
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In contemporary times, which of the following is the major reason that is driving species to extinction?
1. Habitat loss and fragmentation
2. Alien species invasion
3. Overexploitation
4. Co-extinction
1. Habitat loss and fragmentation
2. Alien species invasion
3. Overexploitation
4. Co-extinction
Subtopic: Loss of Biodiversity |
88%
From NCERT
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A scientifically sound estimate made by Robert May places the global biodiversity at about:
| 1. | 2.1 million | 2. | 7 million |
| 3. | 15 million | 4. | 50 million |
Subtopic: Magnitude of Biodiversity |
95%
From NCERT
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Which of the following is not included in hot spots of biodiversity including India?
1. Western Ghats
2. Eastern Himalayas
3. Indo Burma
4. Ganga Yamuna Doab
1. Western Ghats
2. Eastern Himalayas
3. Indo Burma
4. Ganga Yamuna Doab
Subtopic: In Situ Conservation of Biodiversity |
89%
From NCERT
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