Question

spores of the fungus ustilago maydis land and grow on sweet corn. the fungus then infects the plant tissue, extracting nutrients from the plant. the relationship between sweet corn and ustilago maydis can best be described as - choose the correct answer - competition parasitism commensalism predation

Explanation:

Parasitism is a symbiotic relationship where one organism (the parasite) benefits at the expense of another (the host). Here, Ustilago maydis (the fungus) benefits by extracting nutrients from sweet - corn (the host), harming the sweet - corn in the process. In competition, organisms compete for resources; in commensalism, one organism benefits while the other is unaffected; and predation involves one organism killing and consuming another.

Answer:

Parasitism