Multiple Choice Questions

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One out of the following is not responsible for biodiversity loss

  • Alien species invasion

  • Co-extinction

  • Ex-situ conservation

  • Deforestation


C.

Ex-situ conservation

Ex-situ conservation is not responsible for biodiversity loss, rather it is a method of conservation of biodiversity. It conserves selected rare plants/animals in places outside their natural homes. Alien species invasion, co-extinction and deforestation result in extinction of many species and loss of biodiversity.


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Which of the following options consist of nonessential amino acids only

  • Valine, leucine, glycine, alanine

  • Glycine, serine, proline, glutamic acid

  • Proline, aspartic acid, glutamic acid, methionine

  • Cysteine, tyrosine, alanine, isoleucine


Which of the following statements is not true

  • The biodiversity decreases with increasing latitude.

  • The biodiversity decreases with increasing altitude.

  • The fishes show greatest biodiversity among vertebrates. 

  • The biodiversity of bryophytes is greater than that of angiosperms


Assertion: A mangrove tree growing in marshy place has pneumatophores.

Reason: Pneumatophores help in better anchorage to marshy soil.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false.


Assertion :Now-a-days, the biodiversity is declining with an accelerated rate.

Reason : Exotic species are considered to be a major cause of extinction of species.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are hue but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


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Assertion: There are 34 biodiversity hotspots in the world.

Reason: High level of species richness is a criteria for selection of a biodiversity hotspot.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false


Photochemical smog formed in congested metropolitan cities mainly consists of

  • ozone, peroxyacyl nitrate and NOx

  • smoke, peroxyacyl nitrate and SO2

  • hydrocarbons, SO2 and CO2

  • hydrocarbons, ozone and SO2


Which of the following is best method of germplasm conservation

  • Herbarium

  • Botanical garden

  • Seed bank

  • Zoological park


Which of the following has highest diversity in India?

  • Mango

  • Dolphin

  • Tiger

  • Orchids


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The total number of biodiversity hotspots in the world are

  • 72

  • 34

  • 52

  • 24


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