Which element can only be obtained by plants through mineral uptake, rather than via atmospheric fixation by the plant or its symbiont?

Question

Quizplus · Accepted Answer

Unlike carbon, nitrogen, and oxygen, which can be obtained by plants through atmospheric fixation or symbiotic relationships with nitrogen-fixing bacteria, phosphorus can only be obtained by plant roots through mineral uptake from the soil.

Which Element Can Only Be Obtained by Plants Through Mineral