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1. Lichens are symbiotic associations between algae and fungi. 2.The algal component is known as mycobiont and fungal component as phycobiont 3. Algal component is autotrophic and fungal component is heterotrophic 4.Algae absorb water and prepare food for fungi and fungi provide shelter and absorb mineral nutrients for its partner. 5. Lichens are very good pollution indicators - they grow well in polluted areas Regarding 1,2,3,4 and 5:

( a ) 1,3 and 4 are correct; 2 and 5 are incorrect
( b ) 1 is correct; 2,3,4 and 5 are incorrect
( c ) 1 and 3 are correct; 2,4 and 5 are incorrect
( d ) 1,3,4 and 5 are correct; 2 is incorrect

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(C) is the right answer.

Lichens are symbiotic associations i.e. mutually useful associations, between algae and fungi. The algal component is known as phycobiont and fungal component as mycobiont, which are autotrophic and heterotrophic, respectively. Algae prepare food for fungi and fungi provide shelter and absorb mineral nutrients and water for its partner. So close is their association that if one saw a lichen in nature one would never imagine that they had two different organisms within them. Lichens are very good pollution indicators – they do not grow in polluted areas
answered Mar 20, 2014 by pady_1
 

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