Kingdom Animalia: InvertebratesCHAPTERS 32-38

Kingdom Anamalia Characteristics

Multicellular, heterotrophic

Lack cell walls

Movement

Nervous system

Mostly sexual reproduction

Three types of body structure

No Symmetry

Radial Symmetry

Bilateral Symmetry

Invertebrates

Invertebrate: animals without a backbone

Brainpop

SPONGESPhylum Porifera First multicellular

Asexual reproduction

Sessile (don’t move)

*No symmetry (asymmetrical)

JELLYFISHPhylum Cnidaria

First tissues, radial symmetry, sexual reproduction

FLATWORMSPhlyum Platyhelminthes

Bilateral symmetry

Beginnings of cephalization (having a head)

Open circulation

MOLLUSKSPhylum Mollusca Closed circulatory system

All have mantle

SEGMENTED WORMSPhylum Annelida

segmentation

ARTHROPODSPhylum Arthropoda

Segmentation with appendages

Exoskeleton made of chitin

High degree of cephalization

Compound eyes

Subphylum Chelicerata

Subphylum Crustacea

Subphylum Myriapoda

Subphylum HexapodaClass Insecta

ECHINODERMSPhylum Echinodermata

First deuterostomes (true body cavity)

Adult radial symmetry