The relationship between fungal and algal cells (lichen) is
A) mutualistic, in which the fungus receives nutrients from the algal cells, and the algal cells are protected from dessication by the fungus
B) controlled parasitism, with the fungus receiving nutrients, and the algae not benefiting at all from the interaction
C) commensal, with the fungi getting no benefits from the algae
D) a predator-prey relationship, as the fungi feeds on the algae
Answer: B) controlled parasitism, with the fungus receiving nutrients, and the algae not benefiting at all from the interaction