Animal Classification

THE ANIMAL KINGDOM

BASIC CHARACTERISTICS OF ANIMALS: 1. 2. 3.

NINE ANIMAL PHYLA INVERTEBRATES:

VERTEBRATES (CORDATES): (1 phylum)

MULTICELLULAR ORGANISMS

CAPABILITY OF LOCOMOTION

MUST INJEST FOOD

(8 PHYLA)

ALL LACK INTERNAL SKELETON, SOME HAVE EXOSKELTON OR SHELL

INTERNAL SKELTON MADE OF BONE/ CARTILAGE

1. PORIFERA:SIMPLEST ANIMALS

NO TISSUE LAYERS

EXAMPLES: SPONGES

2. CNIDARIA

HOLLOW BODY

HAVE STINGING CELLS

TWO BODY FORMS MEDUSA & POLYP

EXAMPLES: CORAL, JELLYFISH, SEA ANEMONE

3. PLATYHELMINTHES:

EXAMPLES: PLANARIA, FLUKE, TAPEWORM

UNSEGMENTED WORMS

FLAT WORMS

4. NEMATODAUNSEGMENTED WORMS

ROUND WORMS

EXAMPLES: HOOKWORMS, HEARTWORMS

5. ANNELIDA

MOST ADVANCED WORMS

SEGMENTED WORMS

EXAMPLES: LEECH, EARTHWORMS

6. ARTHROPODA

SEGMENTED ANIMALSEXOSKELETONS MADE OF CHITIN

CLASS CRUSTACEAN - MARINE ORGANISMS

EXAMPLES: SHRIMP, LOBSTER, CRAB, BARNACLE

7. MOLLUSCA

SOME HAVE SHELL

UNSEGMENTED, SOFT BODIES

EXAMPLES: SNAIL, SCALLOP

8. ECHINODERMATA

HAVE A DERMAL SKELETON WITH SPINES & PLATES

ONLY LIVE IN MARINE ENVIRONMENT

EXAMPLES: SEA URCHIN,

SEASTAR, BRITTLE STAR

9. CHORDATA

HAVE INTERNAL SKELETON

BACKBONE TO PROTECT SPINAL CORD

EXAMPLES: FISH, REPTILES, BIRDS, AMPHIBIANS, MAMMALS