Symbiosis is also called mutually beneficial symbiosis. It is a type of interspecies relationship that cannot survive without one or the other, and it is a highly developed relationship between organisms. Symbiotic organisms divide labor physiologically. The products of the exchange of life activities form a new structure in the organization.
According to the above definition, which of the followings is not a symbiosis?
Sea anemones are often fixed on the shell of hermit crabs. When it relies on stinging cells to defend against enemies, it can play an indirect protective effect on hermit crabs. And hermit crabs crawl around, which can make the sea anemone get more food