There exists a close association between the algae and the fungus within a lichen. The fungus

  • A
    Fixes the atmospheric nitrogen for the alga
  • B
    Provides protection,anchorage and absorption for the alga
  • C
    Provides food for the alga
  • D
    Releases oxygen for the alga

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Similar Questions

$A$: Lichens do not grow in polluted areas having $SO_2$.
$R$: Lichens secrete carbonic acid and oxalic acid on barren rocks.

Lichens secrete .......... to dissolve rock.

The phycobiont is ..........

Which organisms are sensitive to $SO_2$ pollution?

Which of the following can be used as an industrial pollution indicator?

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