31. Invertebrates

Consider the following list of animals: giant squid, earthworm, largemouth bass, snail, tapeworm, coral, and starfish. The two that belong to the same phylum are the __________, and their phylum is __________.

Cephalopods are the only molluscs __________.

An active marine predator is found possessing these characteristics: a series of tentacles (modified from the foot), a highly developed nervous system, and elaborate eyes. To which of the following clades does this organism most likely belong?

Which of the following are lophotrochozoans that have a lophophore?

Which of the following phyla contains animals that are lophotrochozoans with a mouth, anus, and true coelom?

During typical earthworm reproduction, __________.

Annelids __________.

Leeches are members of the phylum __________ in the clade of bilaterally symmetric animals called __________.

Tapeworms are highly specialized worms that make their living as endoparasites. To which of the following phyla do the tapeworms belong?

The proglottids of a tapeworm contain an elaborate __________ system.

Which of the following groups of worms is/are completely parasitic?

Some species of rotifers undergo parthenogenesis, which means that __________.