Question

which scenario describes a relationship of predator - prey?
oxpecker birds eat parasitic ticks off the backs of zebras.
a tick attaches itself to the inside leg of a deer.
birds feed off the insects that are stirred up from the grasses as cattle move through.
a moray eel eats a fish swimming by.

Explanation:

A predator-prey relationship is when one organism (predator) hunts, kills, and consumes another organism (prey) for food.

• The first option is mutualism (both organisms benefit).
• The second option is parasitism (one organism benefits at the host's expense without killing it).
• The third option is commensalism (one organism benefits, the other is unaffected).
• The fourth option fits predator-prey: the moray eel (predator) kills and eats the fish (prey).

Answer:

D. A moray eel eats a fish swimming by.