There are 15 giant tritons and 10 hermit crabs on a tropical beach

Commensal Relationship Between Giant Tritons and Hermit Crabs

On a tropical beach, there are 15 giant tritons and 10 hermit crabs coexisting with a commensal relationship. The hermit crabs use the empty shells of dead giant tritons to protect their hind-ends. This interaction showcases how organisms can benefit from each other in their natural habitat.

If the giant triton population size suddenly decreased to 2, how would it affect the size of the hermit crab population?

A. The hermit crab population would increase.

B. The hermit crab population would decrease.

C. The hermit crab population would go extinct.

D. The hermit crab population would stay the same.

Answer: B. They would decrease.

Explanation: A decrease in the giant triton population means fewer shells for the hermit crabs to use for protection. This could lead to a decrease in the hermit crab population.

Explanation: In a commensal relationship, one organism benefits from the relationship, while the other organism isn't affected. In this case, the hermit crab uses the empty shells of dead giant tritons for protection. If the population of giant tritons were to reduce suddenly, it means that fewer shells would be available for the hermit crabs to use. Consequently, this could negatively impact the hermit crab population over time, as their available physical protection decreases. Therefore, the correct option is B. The hermit crab population would decrease.

How do hermit crabs benefit from using the empty shells of dead giant tritons?

Hermit crabs benefit from using the empty shells of dead giant tritons by using them as protection for their hind-ends. This allows them to have a secure home and reduce the risk of predation.