The termite requires the protozoan trichonympha in its gut to provide the enzyme cellulase for the termite's use of cellulose in wood products. the protozoan uses the end products of the cellulose breakdown. this would be a relationship.

The correct answer is - mutualistic.

Explanation:

Mutualistic relationship or symbiosis the relation in which two or more different species interact ecologically and each species get benefits from this symbiosis. It is the dominant type of symbiosis present in any community worldwide. Mutualism is present in almost every ecosystem in one or other form.

The trichonympha is a protozoan that produced an enzyme that is able to digest wood that helps the termites to get nutrients and the protozoan uses the end product that is formed by this endosymbiosis.

Thus, the correct answer is - mutualistic.

individual oxygen atoms are formed during photosynthesis.-c.

the answer is sex-linked recessive.