Invertebrates

Which of these is not a major group of invertebrates?

• Fish

• Worms

• Mollusks

• Sponges

A __________ is a simple invertebrate  with holes through which water flows.

• Echinoderms
• Mollusks
• Sponges
• Arthropods

Which one of the following is a characteristic of arthropods?

• They can only live underwater
• Some use air tubes to breathe
• Crocodilians are a major group

Which of these invertebrates have special stinging cells that allow them to catch their prey?

• Mollusks
• Cnidarians
• Arthropods
• Worms

What are the three major groups of Mollusks?

• Cephalopods, Nitropods, and Gastropods
• Nitropods, Bivalves, and Gastropods
• Nitropods, Bivalves, and Cephalopods
• Cephalopods, Bivalves, and Gastropods

All invertebrates _________

• Have a backbone
• Do not have a backbone
• Are really just Vertebrates
• Have a nerve cord

Some invertebrates have exoskeletons which are ___________

• Internal skeletons
• External skeletons
• Soft tissue
• Mushy tissue

Which is NOT a major group of Arthropods?

• Crustaceans 
• Gastropods
• Insects
• Arachnids 

Which of the following is not a characteristic of Mollusks?

• Soft Bodies
• Hard Bodies
• Take in oxygen through gills or lungs
• Muscular foot for movement

A __________ is the simplest animal with a brain, nervous system, and blood in blood vessel.

• Sponge
• Worm
• Mollusk
• Cnidarian