Multiple Choice
When legumes with nitrogen-fixation nodules are given chemical fertilizers with high nitrogen concentrations, they abandon support of the nodules and end the symbiosis.Why?
A) The mineral nutrients inhibit nitrogenase activity.
B) Nitrogen gas is no longer available in the soil.
C) The plant can conserve valuable energy sources by terminating the symbiotic relationship.
D) The dissolved chemical nutrients are toxic to Rhizobium bacteria.
Correct Answer:

Verified
Correct Answer:
Verified
Q6: Plants can remove harmful chemicals from the
Q7: A deficiency of ammonia would inhibit the
Q8: If increased CO<sub>2</sub> concentrations result in plant
Q9: Which of these insectivorous plants does not
Q12: Carnivorous plants evolved because which of the
Q13: Heavy metals in contaminated soils can be
Q13: Blocking the proton pumps in a root
Q15: Which of the following is required by
Q22: Most parasitic plants like other land plants
Q40: A parasitic plant without chlorophyll is likely