Symbiotic bacteria on plant root nodules help by __________________.
Select one:
a. fixing nitrogen
b. increasing exposure to sunshine Incorrect
c. increasing intake of oxygen
d. decreasing surface area for water absorption

Question

Symbiotic bacteria on plant root nodules help by __________________.
Select one:
a. fixing nitrogen
b. increasing exposure to sunshine Incorrect
c. increasing intake of oxygen
d. decreasing surface area for water absorption

anonymous · Answer

Well, they are not on all plants. Mostly legumes.  Anyway, this should help: Soybeans do not require fertilizers with nitrogen and even help increase available nitrogen in the soil.