Simple & complex worms

What characterizes members of phylum Platyhelminthes?

• Flat worms

• Round worms

• Segmented worms

• Ribbon worms

What characterizes members of phylum Nemertea?

• Ribbon worms

• Flat worms

• Round worms

• Segmented worms

What characterizes members of phylum Nematoda?

• Round worms

• Flat worms

• Ribbon worms

• Segmented worms

______ may possibly be the longest animal in the world.

• Caribbean worm

• Flat worm

• Bootlace worm

• None of the above

What distinguishes worms in phylum Annelida from the simple worms of other phyla?

• Presence of a complex nervous system

• Nephridia and metamerism

• Ability to fly

• Photosynthesis capability

The class in phylum Annelida with many species in the marine environment is class

• Polychaeta.

• Okaicata.

• Francescata.

• Bollinata.

What characteristics do organisms in phylum Arthropoda generally share?

• Soft bodies and no legs

• Segmented bodies, jointed legs, and a chitinous exoskeleton

• Wings and feathers

• Fins and scales

What is the hard carbohydrate material that makes up arthropod exoskeletons?

• Cellulose

• Starch

• Chitin

• Glycogen

Why are crustaceans in order Decapoda important to the fishing industry?

• They are used as bait

• They are a major food source

• They clean the ocean floor

• They produce pearls

What is the primary characteristic that sets barnacles apart in class Cirripedia?

• They have wings

• They are free-swimming as adults

• They fuse themselves upside down on surfaces

• They live in freshwater