Unit 5 Test Review Arthropods and Mollusks

Phylum Mollusca have which type of symmetry? 

• Unilateral Symmetry

• Bilateral Symmetry

• Radial Symmetry

• Asymmetry Symmetry

Which class of Mollusks include clams, oysters, and mussels?

• Gastropods

• Bivalves

• Cephalopods

• Scaphopoda

Which part of the Mollusk body is the tissue covering the body and secretes the shell?

• Visceral Mass

• Trochophore

• Mantle

• Foot

Which class of Mollusks have a closed circulatory system?

• Gastropods

• Bivalves

• Cephalopods

• All of the classes

Which class of Mollusks include squid, cuttlefish and octopus?

• Gastropods

• Bivalves

• Cephalopods

• Scaphopoda

Bivalves feed by

• scraping food with their radula

• biting food into bits before swallowing

• pushing their stomach out of their mouths to ingest prey

• filter feeding- feed through siphons 

The hard, rasping, tongue like organ found in most mollusks

• siphon

• radula

• head foot

• mantle

A squid has multiple _______, but only 2 ______.

• arms, feeding tentacles

• feeding tentacles, arms

• arms, legs

• legs, arms

Who is the largest of the mollusk classes?

• Gastropoda 

• Cephalopoda

• Polyplacophora

• Scaphopoda

What class is this?

• Cephalopoda

• Polyplacophora

• Gastropoda

• Bivalvia