Exam 15: Parasitism and Mutualism

Some symbiotic mutualisms involve defense against herbivores.

A host species that harbors a developmental stage of a parasite,but in which the parasite does not reach maturity,is referred to as a(n)________ host.

Preening by birds is an example of an inflammatory response to infection.

Following infection,a typical first-line defense of the host's immune system is

Parasites that live on the skin of their host are called ________.

A relationship between two species in which both species benefit is called ________.

A major problem for parasites is gaining access to and escaping from the host.

Which form of transmission is typically characterized by low virulence?

A mutualism in which two species benefit when living together but can survive when apart is referred to as a(n)

The mutualistic algae that live within the tissues of corals are called ________.

Which of the following mutualisms is a cleaning mutualism in which one species removes ectoparasites from another?

Which of the following mutualists cannot survive without the mutualistic interaction?

Microparasites are usually transmitted directly from one host to another.

Some parasites are transmitted between hosts by an intermediate organism,or ________.

Most nonsymbiotic mutualisms are obligatory.

The host species in which a parasite becomes an adult and reaches maturity is referred to as a(n)________ host.

Parasites may regulate host populations.

Which of the following are symbiotic with corals?

Animal parasites can be either ecto- or endoparasites,whereas all plant parasites live inside the plant tissue as endoparasites.

How are fleas transmitted between hosts?