Invertebrates Invertebrates Goal: Goal: Students will know the 8 Students will know the 8 invertebrate phyla invertebrate phyla
Dec 24, 2015
InvertebratesInvertebrates
Goal:Goal:
Students will know the 8 invertebrate phylaStudents will know the 8 invertebrate phyla
What is an invertebrate?What is an invertebrate?
An animal that does not have a backboneAn animal that does not have a backbone
Plural of phylumPlural of phylum The group below kingdomThe group below kingdom
What is phyla?What is phyla?
Sponges (Porifera)Sponges (Porifera)
AsymmetricalAsymmetrical
Lives in waterLives in water
Filter their food out of waterFilter their food out of water
Cnidarians (Cnidaria)Cnidarians (Cnidaria) Radial symmetryRadial symmetry
Reproduce sexually and asexuallyReproduce sexually and asexually
Catch food using stinging cellsCatch food using stinging cells
Example: Jellyfish, Sea anemoneExample: Jellyfish, Sea anemone
Flatworms Flatworms (Platyhelminthes)(Platyhelminthes)
Bilateral symmetryBilateral symmetry
Most are parasitesMost are parasites
Flat bodyFlat body
Simplest organism with a brainSimplest organism with a brain
Examples: Planarian, TapewormExamples: Planarian, Tapeworm
Roundworms (Nematoda)Roundworms (Nematoda) Bilateral symmetryBilateral symmetry
Most are parasitesMost are parasites
round bodyround body
One-way digestive systemOne-way digestive system
Example: Guinea wormExample: Guinea worm
Segmented Worms Segmented Worms (Annelida)(Annelida)
Bilateral symmetryBilateral symmetry
round body divided into segmentsround body divided into segments
Closed circulatory systemClosed circulatory system
Ex: earthwormEx: earthworm
Mollusks (Mollusca)Mollusks (Mollusca) Bilateral symmetryBilateral symmetry
Soft bodiedSoft bodied
open circulatory systemopen circulatory system
Ex: squid, snail, octopusEx: squid, snail, octopus
Arthropods (Arthropoda)Arthropods (Arthropoda) Bilateral symmetryBilateral symmetry
exoskeletonexoskeleton
Segmented bodiesSegmented bodies
Subgroups:Subgroups: ArachnidsArachnids InsectsInsects CrustaceansCrustaceans CentipedesCentipedes MillipedesMillipedes