If a plant's root produces a nodule meristem, what kind of bacteria must be present in the soil near the plant's roots?

Question

Quizplus · Accepted Answer

Rhizobia are nitrogen-fixing bacteria that form symbiotic relationships with leguminous plants, which produce nodules on their roots. These nodules contain a meristem that is initiated by the presence of the bacteria, which responds to chemical signals from the plant. The bacteria provide the plant with fixed nitrogen, which the plant uses to produce amino acids and other important molecules. Therefore, the presence of rhizobia in the soil near the plant's roots is necessary for the nodule meristem to form.

If a Plant's Root Produces a Nodule Meristem, What Kind