Epiphytic orchids grow harmlessly on their host trees, and derive their resources from the air and from rain, rather than from their host plant. Which of the following is the best description of this species interaction?
A) herbivory
B) competition
C) parasitism
D) commensalism

Question

Quizplus · Accepted Answer

Epiphytic orchids are not harming or benefiting their host trees, so this species interaction can be best described as commensalism. The orchids receive support and occasionally nutrients from the tree, but the tree is neither harmed nor helped.

Epiphytic Orchids Grow Harmlessly on Their Host Trees, and Derive