Kingdom- Animalia Invertebrate Phyla 1) Porifera -Sponges 2) Cnidaria-Jellyfish 3) Platyhelmninthes-flatworms 4) Nematoda-Roundworms 5) Annelida--Segmented worms 6) Mollusca--Clams, Snails, Squid 7) Arthropoda--Insects,Arachnids 8) Echinodermata--Seastars Invertebrate Phyla 1) Porifera -Sponges 2) Cnidaria-Jellyfish 3) Platyhelmninthes-flatworms 4) Nematoda-Roundworms 5) Annelida--Segmented worms 6) Mollusca--Clams, Snails, Squid 7) Arthropoda--Insects,Arachnids 8) Echinodermata--Seastars

What is an Animal? Eukaryotic, Multicellular, Heterotrophic Lack Cell Walls Collagen present Store sugar as glycogen Eukaryotic, Multicellular, Heterotrophic Lack Cell Walls Collagen present Store sugar as glycogen

All Animals form a blastula and gastrula, during embryological development.

Different types of Cleavage (How the cell divides and splits) 1) Protostomes * Spiral Cleavage--blastopore becomes the mouth Most invertebrate Phyla 2) Deuterostomes * Radial Cleavage --blastopore becomes the anus Echinoderata & Chordata--(Not an invert.) 1) Protostomes * Spiral Cleavage--blastopore becomes the mouth Most invertebrate Phyla 2) Deuterostomes * Radial Cleavage --blastopore becomes the anus Echinoderata & Chordata--(Not an invert.)

Types of Symmetry--Or how the body parts are arranged

Radial Symmetry--Cnidaria & Echinodermata

Bilateral (2 halves) Symmetry

2 equal sides--All other phyla

Phylum-Porifera

Porifera--Characteristics Pores Multicellularity No true tissues Sessile, Filter feeders Types--Bath (protein), Glass (SiO 2 ), Chalk Pores Multicellularity No true tissues Sessile, Filter feeders Types--Bath (protein), Glass (SiO 2 ), Chalk

Phylum Cnidaria

Cnidaria--Characteristics First true tissues, First mover (motile) Nerve net, Nematocysts (Stinging cells) One body opening (mouth) 3 Classes--1) Hydrozoa (Hydra, P.M.W.) 2) Scyphozoa (floating, true jellyfish) 3) Anthozoa (corals) First true tissues, First mover (motile) Nerve net, Nematocysts (Stinging cells) One body opening (mouth) 3 Classes--1) Hydrozoa (Hydra, P.M.W.) 2) Scyphozoa (floating, true jellyfish) 3) Anthozoa (corals)

Phylum Platyhelminthes

Platyhelminthes--Characteristics First, “Hunter” Moved head first Cephalization--Head development 3 tissue layers--ectoderm, mesoderm & endoderm Mostly parasitic 3 Classes--Trematoda (flukes) Cestoda (tapeworms) Turbellaria (Planaria et al) First, “Hunter” Moved head first Cephalization--Head development 3 tissue layers--ectoderm, mesoderm & endoderm Mostly parasitic 3 Classes--Trematoda (flukes) Cestoda (tapeworms) Turbellaria (Planaria et al)

Phylum Nematoda

Nematoda--Characteristics Pseudocoelom (false coelom)--A protective cushiony layer between the endoderm & mesoderm 2 body openings (mouth & anus) 1st distinct sexes (boys & girls) Mostly parasitic--hookworms, threadworms, pinworms Pseudocoelom (false coelom)--A protective cushiony layer between the endoderm & mesoderm 2 body openings (mouth & anus) 1st distinct sexes (boys & girls) Mostly parasitic--hookworms, threadworms, pinworms

Phylum Annelida

Annelida Characteristics True coelom All body organ systems, well developed Segmentation Closely related to Molluscs 3 Classes--Oligochaeta (earthworms) Polychaeta (predatory sandworms) Hirudinea (parasitic leeches) True coelom All body organ systems, well developed Segmentation Closely related to Molluscs 3 Classes--Oligochaeta (earthworms) Polychaeta (predatory sandworms) Hirudinea (parasitic leeches)

Phylum Mollusca

Mollusca--Characteristics 2nd most numerous phylum Largest sizes--> Giant squid & clam Variable body form Most have a mantle that secretes a shell 1st camera-type eye (detailed images) Most have head--viscera--foot 2nd most numerous phylum Largest sizes--> Giant squid & clam Variable body form Most have a mantle that secretes a shell 1st camera-type eye (detailed images) Most have head--viscera--foot

Class Bivalvia

More Bivalves…

Class Gastropoda

Gastropods have coiled shells, due to torsion. They are univalves

Class Cephalopoda--Squid, Octopus & Cuttle fish

Phylum Arthropoda-- Characteristics Most numerous #1 Phylum Jointed Appendages (arms, legs, antennae) muscles are in bundles Exoskeleton (made of chitin) Adapted to nearly every habitat & niche Most have Head--Thorax--Abdomen Most numerous #1 Phylum Jointed Appendages (arms, legs, antennae) muscles are in bundles Exoskeleton (made of chitin) Adapted to nearly every habitat & niche Most have Head--Thorax--Abdomen

Phylum Arthropoda Class Insecta

Class Arachnida

Class Crustacea

Phylum Echinodermata (Spiny skin)

Echinodermata--Characteristics Spiny skin Endoskeleton (like vertebrates) Deuterostomes (like chordates) blastopore becomes the anus Radial symmetry (pentaradial) Types--seastars, sea cukes, sand dollars, sea urchins Spiny skin Endoskeleton (like vertebrates) Deuterostomes (like chordates) blastopore becomes the anus Radial symmetry (pentaradial) Types--seastars, sea cukes, sand dollars, sea urchins

Phylum Chordata

Chordate Characteristics--All vertebrates are chordates, but not all chordates are vertebrates Post-anal tail Pharyngeal gill slits Notocord Dorsal neural tube (nerve cord) Post-anal tail Pharyngeal gill slits Notocord Dorsal neural tube (nerve cord)