What is the general term used to describe parasites that live inside their hosts?

What is the name of a parasite that lives on the outside of a host, like a flea?

PARASITES THAT LIVE OUTSIDE THE HOST'S BODYGroup of answer choicesPARASITEPARASITISMENDOPARASITEECTOPARASITE

A definitive host harbors which stage of a parasite?Group of answer choicesCystAdultAll of the abovesporeLarva

Components of a “parasite – host” system

A parasite is:AAn infection that returnsBThe location of a diseased organCAn organism that lives off another organismDA substance used for sterilizing surgical instruments