Question

which of the following terms best applies to the relationship between the pompeii worms and the bacteria?
a competition
b mutualism
c parasitism
d predation

Explanation:

• Competition: Organisms compete for resources like food, space. No indication of this between Pompeii worms and bacteria.
• Mutualism: Both species benefit. Pompeii worms live in extreme heat; bacteria on their backs may get nutrients from the worm's environment and in turn, the bacteria may help protect the worm (e.g., by creating a more stable micro - environment).
• Parasitism: One benefits at the expense of the other. No evidence that bacteria harm the worm.
• Predation: One organism eats another. Bacteria are not eating the worm and vice - versa.

Answer:

B. Mutualism