Exam 6: Sponges: Phylum Porifera

Sponge species may be identified by taxonomists by the shape of their ________________.

Members of the class _____________ are named glass sponges,found in deep sea areas.

In sponges,respiration and excretion of various molecules is accomplished by

Almost all sponges are marine animals.

Lophocytes are ameboid cells that can differentiate into all other cell types.

The asconoid sponges have the simplest type of canal system.

Gemmules are an adaptation of freshwater sponges to withstand adverse environmental conditions.

The analogous equivalent of "connective tissue" in sponges is the

The cells of a sponge that are responsible for water flow and capture of some particles are the

The water outlets in sponges are known as ____________.

The sponges that have been historically used in bathing belong to class _________________.

Internal buds of some species of freshwater sponges that can withstand adverse conditions are _____________________.

The flagellated cells embedded in the mesoglea of a sponge are called ______________.

The structural protein found in sponges is

Thin,epithelial-type cells covering the outer surface of sponges are the _______________.

The most complex body organization,and the one that makes largest size possible,is known as ______________.

Recent research indicates that the sponges and the eumetazoans are ________________ groups.

Multicellularity leads to larger body size because

The adaptive radiation of sponges is mainly due to:

Cells that can differentiate into any other type of cell in sponges are the ________________.