Overexploitation is one of the “evil quartet” that increases the risk of extinction mainly for the:
1. animals that feed on a lower trophic level
2. large animals with low intrinsic reproductive rates
3. aquatic animals
4. terrestrial organisms

Subtopic:  Loss of Biodiversity |
 67%
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The biggest factor for the ‘biodiversity crisis' that we face today is:
1. Global warming
2. Environmental pollution
3. Habitat loss and fragmentation
4. A large and increasing human population

Subtopic:  Loss of Biodiversity |
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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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Regarding the gradients of biodiversity:

I:  As we move from poles to the equator, broadly speaking, biodiversity decreases.
II:  There is an increase in species diversity from lower to higher altitudes.

1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect

Subtopic:  Biodiversity Patterns |
 78%
From NCERT
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Plants are an important source of medicines for human use. Identify the incorrectly matched pair:

 

PLANT

MEDICINE

1.

Taxusbrevifolia

Anticancer drug

2.

Cinchona officinalis

Anti-malarial

3.

Rauwolfiaserpentina

Anti-hypertensive

4.

Catharanthusroseus

Anti-helminthic

Subtopic:  Importance of Biodiversity |
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The pink headed duck has got extinct mainly due to:
1. Habitat destruction
2. Overexploitation
3. Alien invasion
4. Pollution

Subtopic:  Loss of Biodiversity |
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Identify the correct statements regarding the “EDGE” species:
I. They are the only survivor members of their genus or even higher taxon.
II. To increase their conservation many are designated as “focal” species
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II

Subtopic:   Biodiversity Conservation |
 68%
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The ‘Himalayan Quail’ got extinct due to:
1. Habitat destruction
2. Overexploitation
3. Alien invasion
4. Pollution

Subtopic:  Loss of Biodiversity |
 57%
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A bird that was previously thought to be extinct till its rediscovery in 1986 by Bharat Bhushan of Bombay Natural History Society is:
1. Great Indian Bustard
2. Jerdon’s Courser
3. White Peacock
4. Siberian crane

Subtopic:  Loss of Biodiversity |
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The type of species that will most likely be supported by small parks will be:

1.k - selected species2.r - selected species
3.climax species4.species with small niches

Subtopic:   Biodiversity Conservation |
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