Invertebrate Phyla

Which of these phyla shows radial symmetry?

• Porifera

• Mollusca

• Platyhelminthes

• Cnidaria

I am spiny, have a water vascular system with tube feet, radial symmetry, and am called a brittle star.

• Mullosk
• Arthropod
• Echinoderm
• Cnidarian

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

I have a hard exoskeleton, a segmented body, pairs of jointed appendages, and live on land and water.  I am a crab.  What is my phylum?

• Mollusk
• Arthropod
• Echinoderm
• Cnidarian

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

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