Multiple choice

Lichens are

  1. parasites

  2. chemoautotrophs

  3. decomposers

  4. symbionts
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lichens are composite organisms consisting of a symbiotic relationship between a fungus and an alga or cyanobacteria. The fungus provides structure and protection, while the alga provides food through photosynthesis.

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