Animal Classification

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Animal Classification
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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
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1. PORIFERA

• Pore- Bearing
• Filter feeders
• Asymmetrical
• Feed and get rid of wastes thru diffusion
• Sessile
• Ex.- sponges

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2. CNIDARIA

• Have stinging tenacles
• Stun prey with toxins
• Prey is drawn into mouth and dissolved/ digested
• Radial symmetry

EXAMPLES
CORAL, JELLYFISH,
SEA ANEMONE
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Polyps Sea anemones
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Purple striped jelly, Pelagia panopyra
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3. PLATYHELMINTHES

• One opening for ingestion and egestion
• Primitive nervous system
• Exchange gases by diffusion thru moist membranes
• Bilateral symmetry

EXAMPLES
PLANARIA, FLUKE, TAPEWORM
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5. ANNELIDA

• Segmented worms
• Each segment has a nervous. circulatory,
• excretory, muscular system
• Bilateral symmetry
• First organism with complex body systems

EXAMPLES LEECH, EARTHWORMS
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6. ARTHROPODA

• Animals with jointed appendages
• Have an exoskeleton
• They shed their exoskeleton (molt)
• We study crustaceans these are marine
  arthropods

EXAMPLES SHRIMP, LOBSTER,
CRAB, BARNACLE
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7. MOLLUSCA

• There are 3 classes gastropods, bi-valves,
  cephalopods
• Have an external shell
• Have bi- lateral symmetry
• Cephalopods are extremely intelligent
• ex.- squid, octopus, cuttlefish, nautilus

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8. ECHINODERMATA

• Have spiny bodies
• Radial symmetry
• Benthic- bottom dwellers
• Central mouth on ventral surface
• ex.- sea urchin, sea star, sea cucumber, sand
  dollar

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9. CHORDATA

• Have a backbone that protects the spinal cord
• Most developed nervous system
• Contains animals that we are most familiar with
• ex.- fish, mammals, reptiles,
• amphibians