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All Physics Chemistry Botany Zoology

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According to Ecologists and Evolutionary Biologists, the probable reason for speciation in tropics is not

A. Speciation is generally a function of time, more time without environmental disturbances better chance of speciation B. No frequent glaciation in the past like temparate regions C. Constant environment supports niche specialisation D. Tropics had more adapted animals and had a high rate of reproduction so there is more diversity

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Explanation

15.1 Biodiversity

Page number-261-262

15.1.2 Patterns of Biodiversity

Biodiversity and Conservation

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……a… have remained relatively undisturbed for millions of years and thus had a long evolutionary time for……b..The constant environments promote…c..and had a greater species diversity.

Which of the following is correct?

A. a-Tropical latitudes B. b-niche specialization C. c- species diversity D. b- constant environment

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Explanation

15.1 Biodiversity

Page number-262

15.1.2 Patterns of Biodiversity

Biodiversity and Conservation

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The higher diversity of tropics is actually favoured by except

A. High solar energy B. Constant and predicatable environment C. No environmental disturbances like glaciations D. Animals with high reproductive rates

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Explanation

15.1 Biodiversity

Page number-262

15.1.2 Patterns of Biodiversity

Biodiversity and Conservation

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The idea of Species Area Relationship was given by

A. Edward Wilson B. Paul Ehrlich C. A.V. Humboldt D. Katherine Esau

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Explanation

15.1 Biodiversity

Page number-262

15.1.2 Patterns of Biodiversity

Biodiversity and Conservation

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According to Species-Area relationship-

A. Within a region, species richness increased with increasing explored area, but only up to a limit B. Within a region, species evenness increased with increasing explored area without limit C. Within a region, species diversity increases with increasing area. D. Both A and B

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Explanation

15.1 Biodiversity

Page number-262

15.1.2 Patterns of Biodiversity

Biodiversity and Conservation

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For which of the following the relationship between species richness and area turn out to be rectangular hyperbola?

A. Gymnosperms B. Pteridophytes C. Marine Fishes D. Bats

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Explanation

15.1 Biodiversity

Page number-262

15.1.2 Patterns of Biodiversity

Biodiversity and Conservation

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The graph for species-area relationship is actually plotted between

A. Species richness and area B. Species evenness and area C. Species diversity and area D. Species diversity and space

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Explanation

15.1 Biodiversity

Page number-262

15.1.2 Patterns of Biodiversity

Biodiversity and Conservation

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If Z value is found to be 1.15, which of the following species richness was actually studied?

A. Frugivorous birds in the tropical Forests of different continents B. Plants in Britain C. Birds in California D. Molluscs in New York state

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Explanation

15.1 Biodiversity

Page number-262

15.1.2 Patterns of Biodiversity

Biodiversity and Conservation

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If Z value is in between 0.6 to 1.2,This implies

A. Steeper slope B. More towards the horizontal axis C. The value of species richness decreases must faster than the area explored D. Plants of Britain can have this value

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Explanation

15.1 Biodiversity

Page number-262

15.1.2 Patterns of Biodiversity

Biodiversity and Conservation

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If the area explored is entire continent, then slope of the line for species area relationship would be

A. Much gentle B. Much reasonable C. Much steeper D. Both B and C

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Explanation

15.1 Biodiversity

Page number-262

15.1.2 Patterns of Biodiversity

Biodiversity and Conservation

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