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Species diversity.

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Species diversity is the variety of species and their relative abundance in a region.
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Genetic variations affect the production of the drug reserpine in the medicinal plant Rauwolfia vomitoria growing in different Himalayan ranges. What kind of diversity does it indicate ? (a) Species diversity (b) Genetic diversity (c) Ecological diversity (d) None of these

Study the four statements given below and select the two correct ones out of them. (i) A lion eating a deer and a sparrow feeding on grain ar ecologically similar in being consumers. (ii) Predator star fish Pisaster helps in maintainting species diversity of some invertebrates . (iii) Predators ultimately lead to the extinction of praey species. (iv) Production of chemicals such as nicotine, strychnine by the palnts are metablic disorders.

In the tropical rainforest, the majority of trees have showy animal-pollinated flowers. In temperate forests the majority of trees are wind pollinated. Which factors best explain these contrasting patterns ? (i) Wind is rare in tropical forests. (ii) Because of high species diversity in the tropics, individuals of trees species are often widely separated making wind an inefficient means of pollen dispersal. (iii) More opportunities for coevolved mutualisms exist in tropical forests because of the high diversity of animal species. (iv) Trees in tropical forests are mostly evergreen and year-round leaf canopies impede pollen dispersal by wind. (v) Flowering in tropical forests occurs over a short period of time when wind is absent. (a) (i) , (ii) and (v) (b) (i),(iii) and (v) (c) (ii), (iii) and (iv) (d) (ii) and (iv)

Assertion : The specific diversity present in a given community or habitat is referred to as alpha diversity. Reason : Alpha diversity is usually expressed by species richness and species evenness in that community or habitat.

Write note on: Genetic diversity.

Identify different types of diversity by 1,2 and 3 in the given figure.

______is the exploration of molecular, genetic and species-level diversity for gaining the products of economic importance. (a) Exploitation (b) Bioprospecting (c) Co-extinction (d) Patenting

Genetic diversity refers variation of_____ with in species.

ARIHANT PRAKASHAN-BIODIVERSITY AND ITS CONSERVATION-Chapter test
  1. Species diversity.

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  2. Number of species per unit area is known as ........ .

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  3. The biosphere reserve in Mayurbhanj district of odisha.

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  4. Hotspots are also known as …………..of speciation.

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  5. Bhitarkanika National Park in Odisha is situated in

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  6. Asiatic lions are conserved in

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  7. Biodiversity is rich in tropics because of

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  8. Species diversity decreases as we move away from the equator towards t...

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  9. Botanical gardens are meant for in situ conservation of wildlife.

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  10. Buffer zone involves normal anthropogenic activities.

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  11. A protected area dedicated to animal life only.

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  12. Species that have large effect on an ecosystem relative to its abundan...

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  13. The scientist who developed the concept of hotspots of biodiversity?

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  14. What is ecotourism ?

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  15. What are the medicinal values of biodiversity?

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  16. Define environmental modulation.

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  17. Which one is not the direct cause of biodiversity loss?

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  18. Explain, how overexploitation of resources causes loss of biodiversity...

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  19. How is ecotourism related to biodiversity?

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  20. What do you understand by Intellectual Property Rights ?

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  21. How is global warming causing loss of biodiversity?

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