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Beauty of some historical monuments is greatly affected by the growth of certain living organisms. These living organisms belong to which one of the following groups?

Beauty of some historical monuments is greatly affected by the growth of certain living organisms. These living organisms belong to which one of the following groups? Correct Answer Lichens

The correct answer is option 3, i.e. Lichens.

  • Cultural heritage monuments get discoloured and degraded by growth and activity of living organisms like lichens.
  • They form biofilms on surfaces of stone, with resulting aesthetic and structural damage.
  • The other organisms involved are bacteria, fungi, algae, and lichens.
  • Interaction processes between these organisms and stone can enhance or retard the overall rate of the degradation process.
  • They grow in cracks and pores and may bore into rocks and degrade the stone substrate.

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