Invertebrates

What type of symmetry do adult echinoderms exhibit?

• Asymmetry
• Pentaradial symmetry
• Bilateral symmetry
• Trilateral symmetry

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

• Gastropods
• Bivalves
• Cephalopods

Which class of Mollusks include squid, cuttlefish and octopus?

• Gastropods

• Bivalves

• Cephalopods

What type of symmetry do sponges (Porifera) have?

• asymmetrical
• radial
• bilateral 
• medial

What type of symmetry do cnidarians have

• asymmetrical
• bilateral
• radial

What surrounds the mouth of Cnidarians?

• guard cells
• pinococytes
• tentacles
• spines

What are the organelles inside the stinging cells that inject paralyzing toxins into their prey?

• pinacocytes
• lysomatocyts
• choanocytes
• nematocysts

Tags

NGSS.MS-LS1-2

Which class of Mollusks is the only class with some terrestrial species?

• Gastropods
• Bivalves
• Cephalopods

Which is not an example of mollusks?

• snail
• clam
• lobster
• octopus

Which class of Mollusks include organisms that all have two shells?

• Gastropods
• Bivalves
• Cephalopods