Which one of the following statement about lichens is/are incorrect?

They grow very rapidly

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They show fungal and algal symbiotic relationships

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Some of its species are eaten by reindeers

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They are pollution indicators

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Solution

The correct options are
A They grow very rapidly
C Some of its species are eaten by reindeers
A lichen is not a single organism, but it is a combination of two organisms which live together intimately. Most of the lichen is composed of fungal filaments, but living among the filaments are algal cells, usually from a green alga or a cyanobacterium. Lichens are also used as pollution indicators.

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