Using the symbols +, −, and 0 to indicate interspecific species interactions, where the first symbol refers to the first organism mentioned, which of the following claims/statements is correct?
A) +/0 will always remain such.
B) A +/− interaction could shift to +/0 or +/+ over time, depending on other factors such as competition, population density, or environmental changes.
C) Species interactions occur in isolation and cannot affect the structure of ecological communities.
D) A −/− interaction benefits both of the species in the relationship.

Question

Quizplus · Accepted Answer

B is correct because interspecific interactions can indeed shift over time due to various ecological factors. For example, a parasitic relationship (+/−) might become less harmful (thus shifting towards +/0) or even mutually beneficial (+/+) if the host develops tolerance or the parasite evolves to be less virulent.

Using the Symbols +, −, and 0 to Indicate Interspecific