Question

1. what type of relationship exists between the goby fish and the shrimp?

a. parasitism
b. mutualism
c. predator - prey
d. commensalism
answers are on page 663.
disruption of ecosystems
conditions in ecosystems are always changing. sometimes they change quickly and dramatically, due to floods or fire. sometimes they change slowly as new species are introduced and begin to take over an area.

Explanation:

To determine the relationship between goby fish and shrimp, we analyze each option:

• Option A (Parasitism): In parasitism, one organism benefits at the expense of the other (the host is harmed). Goby and shrimp do not have this dynamic.
• Option B (Mutualism): Mutualism is a symbiotic relationship where both organisms benefit. Goby fish and shrimp have a mutualistic relationship: the shrimp builds and maintains a burrow, and the goby acts as a lookout for predators. Both gain from this interaction.
• Option C (Predator - Prey): In predator - prey, one organism hunts and eats the other. Goby and shrimp do not have this predator - prey dynamic.
• Option D (Commensalism): Commensalism is when one organism benefits and the other is neither helped nor harmed. In the goby - shrimp relationship, both benefit, so it is not commensalism.

Answer:

B. mutualism