Invertebrates

Which invertebrate is sessile?

• Chordates

• Mollusks

• Sponges

• Echinoderms

Which of the following invertebrates have radial symmetry?

• sea star

• sponge

• jellyfish

• sea urchins

A worm's tough exoskeleton is referred to as the

• epidermis

• cuticle

• endoderm

• ectoderm

Phyla of animals are defined by

• structure

• how they obtain food

• mode of reproduction

• functional characteristics

Which of the following describes tapeworms?

• free living and nonparasitic

• cause schistomiasis

• roundworms

• live in the gut of vertebrates

Fluid filled body cavity

• coelom

• carapace

• gizzard

• siphon

How do sponges reproduce?

• sperm and egg

• budding

• binary fission

• produce larvae

What seperates the endoderm and ectoderm of cnidarians?

• coelom

• cnidocytes

• mesoglea

• chanocytes

Flatworms have an incomplete or absent

• pharynx

• mouth

• gizzard

• gut

What structure do mollusks use for feeding?

• shell

• gills

• radula

• foot