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NEET Practice Questions (MCQs) with Answers & Solutions

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All Physics Chemistry Botany Zoology

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Mark false statement about Habitat loss and fragmentation?

This is the most important cause driving animals and plants to extinction

The most dramatic examples of habitat loss come from temperate rainforests

Once covering more than 14% of the earth

The Amazon rainforest harbouring probably millions of species is being cut and cleared for cultivating soya beans or for conversion to grassland for raising beef cattle

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Explanation

Habitat loss and fragmentation is the most important cause driving animals and plants to extinction. The most dramatic examples of habitat loss come from tropical rainforests.

(page-264)

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Global species diversity and land area covered by India with respect to world is:

12%, 7%

2.4%, 9%

8.1%, 2.4%

4%, 3%

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Explanation

Although India has only 2.4 per cent of the world’s land area, its share of the global species diversity is 8.1 percent.

(page-261)

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A species facing extremely high risk of extinction in the immediate future is called:

Vulnerable

Endemic

Critically Endangered

Extinct

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Explanation

The organism which facing very high risk of extinction in the wild is considered as critically endangered species by International Union for Conservation of Nature (IUCN). Critically endangered species are Great Indian Bustard, Red headed Vulture.

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Diversity can be understood by which of the following terminology?

A. Heterogeneity B. Homogeneity C. Homozygosity D. Heterotrophic

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Explanation

Introduction

Page number-258

Biodiversity and Conservation

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The term Biodiversity which was used by Edward Wilson was actually used

A. To describe Genetic Diversity B. To describe species Diversity C. To describe Ecological Diversity D. To describe combined diversity at all levels

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Explanation

15.1 Biodiversity

Page number-259

Biodiversity and Conservation

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Genetic Diversity is not

India has more than 50000 genetically different strains of rice

India has 10000 varieties of mango

A single species might show high diversity at the genetic level over it's distributional range

Genetically diverse plant Rawolfia vomitoria is found in Himalayan ranges

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Explanation

15.1 Biodiversity

Page number-259

Biodiversity and Conservation

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Which of the following is wrong with respect to Rawolfia vomitoria?

A. Found in Himalayan ranges B. Medicinal plant C. Species Diversity is not in terms of potency and concentration of reserpine D. Reserpine is an active chemical produced by this plant

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Explanation

15.1 Biodiversity

Page number-259

Biodiversity and Conservation

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Species Diversity

A. Diversity at the level of species B. Diversity at the level of genes within species C. Diversity at the level of ecosystem D. Both A and B

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Explanation

15.1 Biodiversity

Page number-259

Biodiversity and Conservation

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Which of the following can be considered under Ecological Diversity?

A. Deserts, rain forests, mangroves, coral reefs, wetlands, B. Alpine Meadows C. Estuaries D. All of these

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Explanation

15.1 Biodiversity

Page number-259

Biodiversity and Conservation

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Ecological Diversity

A. It is more in India comparative to Scandinavian country like Norway B. It is less in India comparative to Scandinavian country like Norway C. It is more in Australia comparative to India D. Both A and C

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Explanation

15.1 Biodiversity

Page number-259

Biodiversity and Conservation

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