Invertebrate Review-February 27th

Which of these is not a major group of invertebrate?.

• Fish

• Worms

• Mollusks

• Sponges

A ___________is a simple invertebrate with holes through which water flows.

• Echinoderms

• Mollusks

• Sponges

• Arthropods

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 backbones

• Do not have backbones

• Are really just vertebrates

• have a nerve cord

Some invertebrates have exoskeletons which are

• internal skeletons

• external skeletons

• soft organs

• mushy tissue

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

One characteristic that invertebrates and vertebrates share is they both

• are multicellular

• are autotrophs

• have a nerve cords

One key difference between worms and sponges is worms are ______________.

• more complex organisms

• more simple organisms

• have special stinging cells

Worms have bilateral symmetry.

• True

• False