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Q. No.What percentage of world oxygen is thought to be created by Amazonian Rain Forests?
1. 10
2. 20
3. 50
4. 90
Subtopic: Biodiversity Conservation |
89%
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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Which of the following approaches to conserve biodiversity is not an ex-situ approach?
1. Zoological parks and botanical gardens
2. Wildlife safari parks
3. Biosphere reserves
4. Seed banks
1. Zoological parks and botanical gardens
2. Wildlife safari parks
3. Biosphere reserves
4. Seed banks
Subtopic: In Situ Conservation of Biodiversity | Ex Situ Conservation of Biodiversity |
88%
From NCERT
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What is the approximate share of India in global species diversity?
| 1. | 2.1 % | 2. | 5 % |
| 3. | 8.1 % | 4. | 11.2 % |
Subtopic: Magnitude of Biodiversity |
88%
From NCERT
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Alexander von Humboldt:
| 1. | was German and worked in South America and gave species-area relationship |
| 2. | was French and worked in South East Asia and gave species-area relationship |
| 3. | was English and worked in South East Asia and gave resource partitioning concept |
| 4. | was Spanish and worked in South America and gave character displacement concept |
Subtopic: Biodiversity Patterns |
91%
From NCERT
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Consider the given two statements:
| Assertion (A): | India has more biodiversity than Scandinavian countries. |
| Reason (R): | In general, there is a decrease in biodiversity from tropical latitudes to temperate latitudes. |
| 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 True |
Subtopic: Biodiversity Patterns |
78%
From NCERT
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Tilman in his experiments found that:
| 1. | Plots with more species showed less year to year variation in total biomass. |
| 2. | Plots with more species showed more year to year variation in total biomass. |
| 3. | Plots with less species showed less year to year variation in total biomass. |
| 4. | There is no relation between species diversity and biomass production. |
Subtopic: Importance of Biodiversity |
86%
From NCERT
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Nile perch has become invasive in:
| 1. | Lake Chilka | 2. | Lake Wular |
| 3. | Lake Victoria | 4. | Lake Sambhar |
Subtopic: Loss of Biodiversity |
92%
From NCERT
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The ‘Earth Summit’ was held in:
| 1. | Ramsar, Iran | 2. | Rio, Brazil |
| 3. | Doha, Qatar | 4. | Geneva, Switzerland |
Subtopic: Biodiversity Conservation |
95%
From NCERT
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The exploration, discovery, and commercialization of valuable products or compounds derived from biological resources, particularly those found in nature is called as:
| 1. | Bioremediation | 2. | Biopiracy |
| 3. | Bioprospecting | 4. | Biofortification |
Subtopic: Biodiversity Conservation |
73%
From NCERT
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