classification Mr. Smith
Lindsay Middle School  
Objective # 1 Animal Kingdom (Phyla)

CNIDARIANS – radially symmetrical w/ a digestive cavity in 1 opening, most have tentacles armed with stingy cells, live in aquatic environments singly or in colonies (jellyfish, corals, hydra, sea anemones)

MOLLUSKS – soft-bodied animals with a hard shell, aquatic (clams, snails, squid, octopuses)

ANNELIDS – bilaterally symmetrical worms with round, segmented bodies (earthworms, leeches, etc.)

ARTHOPODS – largest phylum, segmented bodies with pairs of jointed appendages and a hard exoskeleton (insects, crustaceans, spiders, horseshoe crabs)

ECHINODERMS –radial symmetry, saltwater organisms with spiny or leathery skin (starfish)

CHORDATES – organisms with internal skeletons, specialized body systems and paired appendages
(fish, amphibians, reptiles, birds, mammals)
Additional Key Concepts

Radial symmetry – the body parts are symmetrical around a central point
Bilateral symmetry – the left and right side of body is alike and equally proportionate
Asymmetrical –these animal do not have a definite shape and therefore, no symmetry

My Quia activities and quizzes
Who Wants to Be A Millionaire (Classification of Living Things)
Do you Know Classification?
The Structure of Cells
How well do you know your cells?
Useful links
Last updated  2008/09/28 08:28:46 EDTHits  584