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?
Flagellates live in the digestive tracts of termites or other animals, and the digestive fiber supplies the host, and the host provides it with nutrition and habitat