Invertebrate Phyla

Which of these phyla shows radial symmetry?

• Porifera

• Mollusca

• Platyhelminthes

• Cnidaria

I have a soft-body, a hard shell, and live on land and water.  What am I?

• Mollusk
• Arthropod
• Echinoderm
• Cnidarian

I have a digestive cavity with one opening, and have tentacles.  I am a hydra.

• Echinoderm
• Cnidarian
• Arthropod
• Mollusk

To what phylum do I belong?

• Echinoderm

• Cnidarian

• Mollusk

• Annelid

To what phylum do I belong?

• Annelid

• Mollusk

• Echinoderm

• Cnidarian

Which taxonomic class is the largest?

• Genus

• Species

• Class

• Order

Nematocysts are found in association with..

• Colloblasts

• Cnidocytes

• Cephalization

• Choanocyte

In contrast to prokaryotic organisms, all eukaryotic organisms:

• Are multi-cellular

• Reproduce sexually

• Have a cells with a nucleus

• Breathe oxygen

In which Domain can Kingdom Animalia be found?

• Archea

• Bacteria

• Eukarya

Characteristics of animals are eukaryotic, multicellular, and _________________

• autotrophic

• heterotrophic