Kingdom Animalia

You have 30 seconds to list as many animals as you know...

Characteristics of organisms in Kingdom Animalia multicellular eukaryotic (nucleus and organelles) heterotrophic exo or endoskeleton (support system) sexual reproduction (some asexual)

Factors Used To Classify Animals level of organization Body symmetry cephalization body cavity formation mode of reproduction energy source motility

Level of Organization

Types of body symmetry

Bilateral Radial Symmetry Pro's & Con's Bilateral Asymmetrical no plane around body for repetition very poor movers usually sessile sponges Bilateral mirrored down central line of body good movers sense organs at one end anterior, posterior, dorsal, ventral, lateral Radial body parts repeated around central disk no real head slow movers, usually sessile sand dollars, anenomes Bilateral Asymmetrical Radial

Cephalization

Body Cavity Formation

Mode of Reproduction

Energy Source

Phylum Porifera no true tissues (just specialized cells working independently) holdfast - attach to rocks asymmetrical spongocoel - inner cavity choanocytes - cell with flagellum that generate current of water porocyte - allows water to enter

Phylum Porifera no real endo or exoskeleton has silica spicules to form some structure and shape filter feeder rely on the water to bring in oxygen and remove CO2

Phylum Porifera reproduce by budding (asexual) or external fertilization millions of sperm released into current (June-ish) this triggers eggs to be released (attached to mucous strings) - hermaphrodite fertilization takes place and larvae settles on substrate and starts to grow into new sponge

Phylum Cnidaria anemones, jellies, corals, box jellies, ctenophores radial symmetry or asymmetrical (some corals) tissues (cells working together) have exoderm, endoderm, and mesoglia (jelly filled middle) start of digestive system (no anus)

Phylum Cnidaria Polyp Medusa

Do you notice anything about these two forms of cnidaria?

basic nervous system (nerves in body to respond when they sense food) Phylum Cnidaria basic nervous system (nerves in body to respond when they sense food) sea anemones will battle for territory

Nematocysts

box jelly sting

Coral Reef asymmetrical soft coral (sea fans) and hard coral (exoskeleton of calcium)