The Animal Kingdom Phyla to know Cnidarians Mollusks

The Animal Kingdom

Phyla to know! • • • Cnidarians Mollusks Annelids Arthropods Echinoderms Chordates

Phylum Porifera SPONGES Have many pores Central cavity Collar cells Cup sponges, dead man’s fingers, bath sponges

Phylum Cnidaria JELLY ANIMALS Radial symmetry Stinging cells Tentacles Jelly bodies Jellies, coral, sea anemones

Phylum Platyhelminthes FLATWORMS Flat Three cell layers Fluke Planarian Tapeworm

Liver Fluke Life Cycle

Phylum Nematoda ROUNDWORMS Round Tube-within-a-tube digestive system Heartworms, hookworms, pinworms

Hookworm Life Cycle

Hookworm, Necator americanus eggs – size 68 microns adult female adults from one child

Heartworm Life Cycle

heartworms

Phylum Annelida SEGMENTED WORMS Segmented bodies Earthworms, leeches, sandworms

Phylum Mollusca MOLLUSKS Soft bodies Muscular foot Some have shells Clams, oysters, scallops, octopi, slugs, snails, squid

giant squid

Phylum Echinodermata SPINY SKINNED ANIMALS Spiny skin Radial symmetry Tube feet Sea stars, sea cucumbers, sand dollars, sea urchins

Phylum Arthropoda EXOSKELETON SEGMENTED BODY JOINTED LEGS MUST MOLT EXOSKELTON TO GROW

Class Myriapoda MANY LEGS Centipedes – one pair of legs per segment Millipedes – two pairs of legs per segment

Class Insecta INSECTS 3 pairs of legs 3 body sections (head, thorax, abdomen) 1 pair antennae 2 pair of wings (usually) Undergo metamorphosis

Class Arachnida ARACHNIDS 4 pairs of legs 2 main body parts – head and cephalothorax Spiders, tick, scorpions

Class Crustacea CRUSTACEANS 5 pairs of legs Chewing mouthparts Lobsters, crayfish, crabs, shrimp, sowbugs

Phylum Chordata NOTOCHORD NERVE TUBE PHARYNGEAL GILL SLITS

SUBPHYLUM VERTEBRA

Class Agnatha Jawless Fish Round mouth, no jaw Cartilage skeleton Lamprey, hagfish

Class Chondrichthyes CARTILAGE FISH Cartilage skeleton Have jaws and paired fins Sharks, rays

Class Osteichthyes BONY FISH Bone (calcium carbonate) skeleton Jaws and paired fins Perch, guppy, trout

Class Amphibia AMPHIBIANS Live early life in water, adults on land Must have moist skin Frogs, toads, salamanders

Class Reptilia REPTILES Dry, scaly skin covered with scales Leg eggs on land Four chambered heart Snakes, lizards, turtles, alligators, crocodiles

Class Aves BIRDS Feathers Scaly skin Wings Warm blooded Robins, eagle, ducks

Class Mammalia MAMMALS Provide milk for young Have hair or fur Warm blooded Bats, whales, cougars, wolves, etc.