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Q. No.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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Which of the following is not an alien species that became invasive in India?
1. Parthenium hysterophorus
2. Lantana camara
3. Eicchornia crassipes
4. Strobilanthes kunthiana
1. Parthenium hysterophorus
2. Lantana camara
3. Eicchornia crassipes
4. Strobilanthes kunthiana
Subtopic: Loss of Biodiversity |
88%
From NCERT
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What argument for conserving biodiversity relates to what we owe to millions of plant, animal and microbe species with whom we share this planet?
1. Narrowly utilitarian
2. Broadly utilitarian
3. Ethical
4. Useless
1. Narrowly utilitarian
2. Broadly utilitarian
3. Ethical
4. Useless
Subtopic: Biodiversity Conservation |
76%
From NCERT
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The given map of India shows:
1. The biodiversity hotspots in India
2. Seismic zones in India
3. Latest biosphere reserves of India
4. Ramsar sites in India
1. The biodiversity hotspots in India
2. Seismic zones in India
3. Latest biosphere reserves of India
4. Ramsar sites in India
Subtopic: In Situ Conservation of Biodiversity |
94%
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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The United Nations Conference on Environment and Development (UNCED), also known as the Earth Summit was held in:
1. 1986
2. 1987
3. 1992
4. 2002
1. 1986
2. 1987
3. 1992
4. 2002
Subtopic: Biodiversity Conservation |
86%
From NCERT
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An overwhelmingly large proportion of the species waiting to be discovered are in the:
1. tropics
2. sub-tropical areas
3. temperate areas
4. polar areas
1. tropics
2. sub-tropical areas
3. temperate areas
4. polar areas
Subtopic: Biodiversity Patterns |
86%
From NCERT
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The pie chart shows the magnitude of biodiversity in vertebrate taxa. Fishes are represented by the alphabet:
| 1. | A | 2. | C |
| 3. | D | 4. | B or E |
Subtopic: Magnitude of Biodiversity |
90%
From NCERT
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