9th Class Social Science Diversity in Living Organisms Question Bank 9th CBSE Social Science Diversity in Living Organisms

  • question_answer
      What are lichens?

    Answer:

                      Lichens are called compound plants as algae and fungi live together in close association, as a result of which both are benefitted. This relationship is called symbiosis. They occur as greyish green growths on rocks, bark of the tree or on the ground.


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