Beans, peas, and other legumes have root nodules that are caused by ________ and have the role of ________.
A) bacteria; taking up and reducing atmospheric nitrogen
B) bacteria; improving the extraction of water and minerals from the soil
C) fungi; storing food for the plant in the fungal bodies
D) fungi; improving the extraction of water and minerals from the soil
E) fungi; taking up and reducing atmospheric nitrogen

Question

Quizplus · Accepted Answer

Root nodules found in legumes are caused by bacteria called rhizobia. These nodules are responsible for taking up atmospheric nitrogen and reducing it into a form that the plant can use for growth. This process is called nitrogen fixation and is important for maintaining soil fertility and supporting plant growth. Option B is incorrect because root nodules do not improve the extraction of water and minerals from the soil. This is actually achieved through the root hairs found on the surface of roots. Options C, D, and E are incorrect because root nodules are not caused by fungi and do not store food or take up atmospheric nitrogen.

Beans, Peas, and Other Legumes Have Root Nodules That Are