Maximum global diversity amongst the following is exhibited by:
1. Mollusks 2. Echinoderms
3. Annelids 4. Crustaceans
Subtopic:  Magnitude of Biodiversity |
 69%
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Consider three sample areas with the following composition: 

Sample area I: has three species of birds, two are represented by one individual each and the third by four individuals
Sample area II: has three species of birds, each represented by two individuals
Sample area III: has a species of insects, a species of mammals and a species of birds, each with two individuals

Which area will be considered as the most diverse?
1. Sample area I
2. Sample area II
3. Sample area III
4. Sample area II and Sample area III are equally diverse

Subtopic:   Biodiversity Conservation |
 86%
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On a logarithmic scale, the species-area relationship is a:
1. straight line 2. rectangular hyperbola
3. parabola 4. concave up curve
Subtopic:  Biodiversity Patterns |
 68%
From NCERT
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Which subspecies of tiger is not extinct?
1. Caspian 2. Bali
3. Javan 4. Sumatran
Subtopic:  Loss of Biodiversity |
 88%
From NCERT
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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
Subtopic:  Loss of Biodiversity |
 88%
From NCERT
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Year-to-year variation shown by areas with more species is ................... with respect to areas with less species.

1. less 2. more
3. same 4. absent

Subtopic:  Importance of Biodiversity |
 69%
From NCERT
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Consider the given three statements:
I: The current mass extinction of species is the ‘Sixth Extinction’.
II: The current species extinction rates are estimated to be 100 to 1,000 times faster than in the pre-human times.
III: Our activities are responsible for the faster rates.
 
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic:  Loss of Biodiversity |
 92%
From NCERT
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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%
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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%
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The ‘World Summit on Sustainable Development -2022’ was held in:
1. Ramsar, Iran
2. Rio, Brazil
3. Johannesburg, South Africa
4. Geneva, Switzerland
Subtopic:   Biodiversity Conservation |
 79%
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