Question

question 40
plants can most readily utilize the ______ form of nitrogen.
n₂
nitrate
nitrous oxide
amino

Explanation:

Plants cannot directly use atmospheric nitrogen (\(N_2\)). Nitrous oxide (\(N_2O\)) is a greenhouse gas and not a major nitrogen source for plants. Amino - containing compounds are organic nitrogen forms that are usually the result of plant metabolism rather than the initial absorbed form. Nitrate (\(NO_3^-\)) is an inorganic form of nitrogen that plants can readily take up through their roots and use for various metabolic processes such as protein synthesis.

Answer:

nitrate