Exam 8: Animal-Like Protists: the Protozoa

Protists are believed to have arisen about __________ years ago.

A(n)________ protozoan would possess a lobopodium.

Sexual reproduction of ciliates involves a process called

A process known as __________ begins the sexual phase of the apicomplexans life cycle.

An important parasitic ciliate that lives in the large intestines of humans,pigs,and other mammals is

Because protist groups cannot be traced back to a single common ancestor the group is considered to be

Ciliates have a distinct "cell mouth" called a

In some protists,food may be ingested in a special region,the

The white cliffs of Dover are an example of a/an __________ chalk deposit.

Egestion vacuoles release their contents through the

The principal nitrogenous waste of protozoans is

The most recent classification scheme put forth by the International Society of Protistologists places protists into six

Protists in this supergroup are amoeboid in morphology and have very fine pseudopodia called filopodia that are supported by axopodia.

Of the protozoans listed below,which one is capable of photosynthesis?

All ciliates have a large __________ nucleus that controls normal functions.

Members of the genus Amoeba ingest food by

__________ is an organism that causes one of the opportunistic diseases affecting AIDS patients in the United States.

In the ciliates,one or more __________ serve as the genetic reserve of the cell.

Which of the following explains why precise evolutionary relationships are difficult to determine for the protozoa?

Many __________ are symbiotic in the digestive tracts of ruminant ungulates (hoofed mammals),and aid in digestion for their hosts.