Multiple Choice Questions

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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


D.

The biodiversity of bryophytes is greater than that of angiosperms

The biodiversity of bryophytes is less than that of angiosperms. Bryophytes are plants that can live in soil but are dependent on water for sexual reproduction.

Angiosperms are much advanced plant species which consist of male sex organ (stamen) and female sex organ (pistil) borne in a flower.


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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.


One out of the following is not responsible for biodiversity loss

  • Alien species invasion

  • Co-extinction

  • Ex-situ conservation

  • Deforestation


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


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


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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


The total number of biodiversity hotspots in the world are

  • 72

  • 34

  • 52

  • 24


Which of the following has highest diversity in India?

  • Mango

  • Dolphin

  • Tiger

  • Orchids


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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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