Multiple choice

Lichens represent symbiotic relationships between algae and

  1. viruses

  2. bacteria

  3. fungi

  4. protozoa

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lichens are symbiotic organisms formed by the association of algae (photosynthetic partner) and fungi (structure and protection). The algae provides food through photosynthesis while fungi provides minerals and shelter.