Animals

Invertebrates

What are Animals? Cannot make their

own food Have many cells They have

eukaryotic cells Movement Digest their food Are we animals??

http://www.windows.ucar.edu/earth/Life/images/celltypes.gif

Animals are… Vertebrates

Endoskeleton

Invertebrates Exoskeleton No Skeleton

Animals have… Symmetry

Bilateral Most animals

Radial Jellyfish and Starfish

Asymmetrical Sponge

http://www.nmfs.noaa.gov/habitat/ead/EADimages/Sponges.png

Invertebrates Majority of Animals

(95%) No Skeleton Exoskeletons

Chitin Molt

Eight major Phyla (groups)

academic.brooklyn.cuny.edu/.../page/chitin.html

Porifera [por IF er uh] Pore-bearing

animals Sponges

http://www.lpdatafiles.com/data/mso2003/SCUBA%20SPONGES.jpg

Cnidaria [ni DER ee uh] Have special

stinging cells Hollow bodies Jellyfish, coral, sea

anemones

Platyhelminthes [plat ee hel MIN theez] Worms with

flattened bodies Planarians,

tapeworms, flukes

http://waa.uwalumni.com/onwisconsin/2003_summer/images/tapeworms.jpg

Nematoda [nee muh TOH duh]

Worms with round, tube-like bodies

Pinworms, trichina worms, heartworm, hookworm

lovemyspca.com/PetsEnemies.html

Annelida [an nuh LEE duh] Worms with

segmented bodies, body divided into rings

Earthworms, leeches, sandworms

Mollusca [mo LUSK uh] Soft-body tissue Must have at least

one: Ribbon-like tongue

with tiny teeth Protective case Layer of mantle

Clams, oysters, squid, snails, octopus

Arthropoda [AHR thruh pahd uh] Animals with

segmented bodies Jointed legs Exoskeleton Insects, spiders,

lobsters, crabs, scorpions, ticks

Echinodermata [Ee KINE o der MAT a]

Spiny Bodies Leathery-skin Live in the Oceans Starfish, sand

dollars, sea urchins

Simple vs. Complex Inverts Porifera

Sponges Most simple

invertebrate

Cnidarians Platyhelminthes

Simplest worms

Nematodes

Annelids

Mollusks

Arthropod

Echinoderm