Marine Invertebrates

What does the term echinoderm mean?

• tube feet
• star shaped
• spiny skin
• stomach foot

What echinoderm is this?

• sea lily 
• sea urchin 
• sea cucumber 
• sand dollar 

all have radial symmetry

• univalve
• bivalve
• head-footed
• echinoderms

Which part of the Mollusk body is specialized for burrowing, feeding, and movement?

• trochophores
• visceral mass
• mantle
• foot

What type of symmetry do MOST mollusks have?

• Bilateral
• Radial
• Circular
• Asymmetrical

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

• Gastropods
• Bivalves
• Cephalopods

Which class of Mollusks include squid, cuttlefish and octopus?

• Gastropods
• Bivalves
• Caphalopods

Which class of Mollusks includes snails, slugs, or nudibranches?

• Cephalapods
• Bivalves
• Gastropods

All arthropods have segmented bodies, jointed appendages, and ________________. 

• tails
• lungs
• wings
• an exoskelton

Which of the following is a correct description of the polyp body form?

• It is sessile and the tentacles and mouth point downward.
• It is sessile and the mouth and tentacles point upward.
• It is mobile and the tentacles and mouth point downward.
• It is mobile and the tentacles and mouth point upward.