Plants called legumes have chambers in their roots that house nitrogen-fixing bacteria. Nitrogen-fixing bacteria get both a place to live and energy while supplying nitrogen to a plant. What is this ecological relationship called?
A) Competition
B) Predation
C) Succession
D) Mutualism
E) Parasitism

Question

Quizplus · Accepted Answer

This ecological relationship is called mutualism because both the legumes and the nitrogen-fixing bacteria benefit from the interaction. The bacteria receive a habitat and energy from the plant, and in return, they convert atmospheric nitrogen into a form that the plant can use, which is beneficial for the plant's growth.

Plants Called Legumes Have Chambers in Their Roots That House