Chapter 1.  Introduction 

1.  A parasite that lives inside a host is referred to as a(n):
a.  Accidental parasite
b.  Ectoparasite
c.  Endoparasite
d.  Facultative parasite

2.  Zoonosis is a term used to describe humans’ relationship with a(n):
a.  Accidental parasite
b.  Ectoparasite
c.  Endoparasite
d.  Facultative parasite

3.  An animal that harbors a parasite that can also infect humans is referred to as a(n):
a.  Definitive host
b.  Intermediate host
c.  Reservoir host
d.  Transport host

4.  The host in which the parasite reaches sexual or reproductive maturity is referred to as a(n):
a.  Definitive host
b.  Intermediate host
c.  Reservoir host
d.  Transport host

Answer Key for Chapter 1.  Introduction 

1.  A parasite that lives inside a host is referred to as a(n):
a.  Accidental parasite
b.  Ectoparasite
c.  Endoparasite
d.  Facultative parasite

ANS: C
RATIONALE: Endoparasites live inside the host. Ectoparasites live on the outside of the host. Facultative parasites can live as well outside the host as inside the host; host infection usually occurs accidentally. Other accidental parasites may include parasites that usually infect other animals. 
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall

2.  Zoonosis is a term used to describe humans’ relationship with a(n):
a.  Accidental parasite
b.  Ectoparasite
c.  Endoparasite
d.  Facultative parasite

ANS: A
RATIONALE: Zoonosis is an accidental infection with a parasite that usually parasitizes animals. Endoparasites live inside the host. Ectoparasites live outside of the host. Facultative parasites can live as well outside the host as inside the host; host infection usually occurs accidentally.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall

3.  An animal that harbors a parasite that can also infect humans is referred to as a(n):
a.  Definitive host
b.  Intermediate host
c.  Reservoir host
d.  Transport host

ANS: C
RATIONALE: Reservoir hosts harbor parasites that are also infective for humans. Infections occur when humans encounter infected animals or infective forms related to that parasite's life cycle.
KEY: Introduction: parasite-host relationships | Cognitive level: recall

4.  The host in which the parasite reaches sexual or reproductive maturity is referred to as a(n):
a.  Definitive host
b.  Intermediate host
c.  Reservoir host
d.  Transport host

ANS: A
RATIONALE: The definitive host harbors the parasite in its complete form, which promotes continuance of the parasite's life cycle. A reservoir host also serves as a definitive host.
KEY: Introduction: parasite-host relationships | Cognitive level: recall