Year-to-year variation shown by areas with more species is ................... with respect to areas with less species.

1.less2.more
3.same4.absent

Subtopic:  Importance of Biodiversity |
 68%
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The rivet popper hypothesis was given by:

1.  Humboldt 2.  Ehlrich
3.  Tilman 4.  Tansley

Subtopic:  Importance of Biodiversity |
 81%
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Which of the following is not a reason that accounts for greater biodiversity of tropics?

1. availability of more solar energy
2. more niche specialization
3. more time for species diversification
4. large seasonal variations in environmental factors
Subtopic:  Biodiversity Patterns |
 79%
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Although, India has only 2.4 % of world’s area, its share of global species diversity is about:

1. 3% 2. 5%
3. 8% 4. 11%
Subtopic:  Introduction & Types |
 89%
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Approximately, what number of species have been identified, named and studied?

1. 1.0 million 2. 1.5 million
3. 1.7 million 4. 2.0 million

Subtopic:  Introduction & Types |
 54%
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The greatest biodiversity on the earth is found in:

1. African grasslands
2. Amazonian rain forest in South America
3. Western Ghats in India
4. Nile delta in Egypt
Subtopic:  Biodiversity Patterns |
 93%
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The relation between species richness and area for a wide variety of taxa on alogarithmic scale is a:

1.rectangular hyperbola2.straight line
3.sigmoid curve4.circular circle

Subtopic:  Biodiversity Patterns |
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The total number of biodiversity hotspots in the world is:

1.252.17
3.344.51

Subtopic:  In Situ Conservation of Biodiversity |
 92%
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Biodiversity loss is now one of the world’s most pressing crisis. The primary reason for this is that:

1. we cannot do anything about it
2. we are not responsible for this loss
3. we still do not know its entire extent
4. it is only affecting the developing countries
Subtopic:  Importance of Biodiversity | Loss of Biodiversity |
 71%

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Between community, diversity is known as:

1.alpha diversity2.beta diversity
3.gamma diversity4.delta diversity

Subtopic:  Introduction & Types |
 60%

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