Exam 34: Coelomate Invertebrates

A marine biologist is conducting research on animals that have a lophophore and two calcified shells.Based on this information,this animal this must belong to the phylum

Trochophores,the free-swimming larvae of many mollusks,are propelled through the water by

Choose the letter of the best match from the following: -Have reduced and separated endoskeletons,making them soft bodied.

Annelids are characterized by serial _________.

Radula modification allowed all of the following functions in gastropods except

Insect sensing of the environment is through all of the following except

Choose the letter of the best match from the following: -Typically possess a hard shell,in which they live;unequal growth during development produces a twisting of visceral mass;include snails and slugs.

The passage of an arthropod through stages from egg to adult is

Choose the letter of the best match from the following: -Termites

The cephalapod mollusks have

Spiders are characterized by all of the following except

Choose the letter of the best match from the following: -Lack distinct arms but have a five-part body plan.

Most of the familiar animals seen along the seashore are echinoderms,which include all of the following except

Which one of the following insect organ systems has placed the greatest limitation on body size compared to that of vertebrates?

Sea stars are among the most important invertebrate

An invertebrate biologist is conducting research with crabs.Her interest is ecdysis.This implies that she studies

Reproduction in the earthworm involves

A _________ is a circular or U-shaped ridge around the mouth,bearing either one or two rows of ciliated,hollow tentacles.

In a recent morphological study of arthropod phylogeny,it was reported that insects are more closely related to

Compound eyes are composed of independent visual units called