Lichens, which are capable of initiating ecolological succession even on a bare rock, are actually a symbiotic association of

1. A. algae and bacteria
2. B. algae and fungi
3. C. bacteria and fungi
4. D. fungi and mosses

Answer: B

Explanation

Lichens represent an intimate mutualistic relationship between a fungus and photosynthesising algae or cyanobacteria.