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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Lichens do not like to grow in cities.

Assertion: Lichen is important for chemical industries.
Reason: Litmus and Orcein are formed from lichens.

Give scientific reasons: Lichens are an example of symbiosis.

$A$ bacteriophage is

Lichens are useful as:

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