Aparticular species of unicellular organism inhabits the intestines of termites, where the unicellular organisms are protected from predators. wood that is ingested by the termites is digested by the unicellular organisms, forming food for the termites. the relationship between these two species can be described as

Mutualism

Mutualism is a relationship between organisms of two different species in which each benefits. From the question given above, the relationship between the termites and the unicellular organism can be described as mutualism because both organisms benefit from each other.

the major parts of the digestive system:

salivary glands.

pharynx.

esophagus.

stomach.

small intestine.

large intestine.

rectum.

accessory digestive organs: liver, gallbladder, pancreas.

the endomembrane system i think