Multiple choice

Lichens bear a composite structure consisting of two dissimilar organisms, which are _____.

  1. a fungus and an alga

  2. a fungus and a bacterium

  3. a virus and a bacterium

  4. a higher plant's root and a fungus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Lichens are a symbiotic association between a fungus (mycobiont) and an alga or cyanobacterium (photobiont).

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