What is a definitive host in the life cycle of a parasite?
A) An organism in which asexual reproduction or an immature form of a parasite occurs.
B) An organism in which either sexual reproduction or asexual reproduction of the parasite occurs.
C) An organism in which sexual reproduction or the adult form of a parasite occurs.
D) An organism in which the parasite multiplies asexually, without causing any damage to the host.
E) An organism from which a parasite typically is not passed to another host, so that the parasite cannot complete its life cycle.

Question

Quizplus · Accepted Answer

The definitive host is the organism in which the sexual reproduction or adult form of the parasite occurs. This is where the parasite reaches maturity and can reproduce sexually, thus completing its life cycle. Other hosts may be involved in the life cycle, but the definitive host is the most important for the parasite's development.

What Is a Definitive Host in the Life Cycle of a Parasite