Interactions between Organisms

predator/prey

commensalism

mutualism

parasitism

Predation, because the ants feed on the fungi

Mutualism, because both the ants and the fungi benefit from each other

Competition, because both organisms consume the same resource for energy

Commensalism, because the ants receive energy from the fungi and the fungi are unaffected

Commensalism

Mutualism

Neutralism

Parasitism

Intestinal bacteria obtain nutrients from the gut and produce vitamin K used by humans.

Bacteria become resistant to antibacterial medication that humans use for treatment.

Invasive bacteria at an area of injury produce toxins that damage healthy tissues of the human body.

Bacteria in improperly prepared food is consumed by humans, causing food poisoning

harmful role

beneficial role

both harmful and beneficial role

neither