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Invertebrate Comparison

Published byClyde Sims Modified over 6 years ago

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Presentation on theme: "Invertebrate Comparison"— Presentation transcript:

1 Invertebrate Comparison

2 Terminology Germ layer Symmetry Open and Closed Systems Coelom
Cephalization Protosome Deuterosome Blastopore

3 Compare/Contrast Table
Section 29-1 Compare/Contrast Table Comparing Invertebrates Major Characteristics Germ Layers Body Symmetry Cephalization Coelom Early Development Sponges Absent — Cnidarians Two Radial Absent — Flatworms Three Bilateral Present Absent Protostome Roundworms Three Bilateral Present Pseudocoelom Protostome

4 The Anatomy of a Sponge Section 26-2 Water flow Osculum Choanocyte
Central cavity Pores Spicule Pore cell Pore Epidermal cell Archaeocyte

5 Compare/Contrast Table
Section 29-1 Compare/Contrast Table Comparing Invertebrates Major Characteristics Germ Layers Body Symmetry Cephalization Coelom Early Development Sponges Absent — Cnidarians Two Radial Absent — Flatworms Three Bilateral Present Absent Protostome Roundworms Three Bilateral Present Pseudocoelom Protostome

6 The Polyp and Medusa Stages
Section 26-3 Epidermis Mesoglea Gastroderm Tentacles Mouth/anus Gastrovascular cavity Mesoglea Gastrovascular cavity Mouth/anus Tentacles Medusa Polyp

7 Compare/Contrast Table
Section 29-1 Compare/Contrast Table Comparing Invertebrates Major Characteristics Germ Layers Body Symmetry Cephalization Coelom Early Development Sponges Absent — Cnidarians Two Radial Absent — Flatworms Three Bilateral Present Absent Protostome Roundworms Three Bilateral Present Pseudocoelom Protostome

8 The Anatomy of a Flatworm
Section 27-1 Eyespot Ganglia Freshwater flatworms have simple ganglia and nerve cords that run the length of the body. The excretory system consists of a network of tubules connected to flame cells that remove excess water and cell wastes. Head Nerve cords Gastrovascular cavity Flatworms use a pharynx to suck food into the gastrovascular cavity. Digested food diffuses from the cavity into other cells of the body. Eyespots in some species detect light. Excretory system Ovary Testes Mouth Pharynx Most flatworms are hermaphrodites, having male reproductive organs (testes) and female reproductive organs (ovaries) in the same organism. Flame cell Excretory tubule

9 Compare/Contrast Table
Section 29-1 Compare/Contrast Table Comparing Invertebrates Major Characteristics Germ Layers Body Symmetry Cephalization Coelom Early Development Annelids Three Bilateral Present True coelom Protostome Mollusks Three Bilateral Present True coelom Protostome Arthropods Three Bilateral Present True coelom Protostome Echinoderms Three Radial (adults) Absent (adults) True coelom Deuterostome

10 The Anatomy of an Earthworm
Section 27-3 Anus Clitellum Circular muscle Longitudinal muscle Nephridia Ganglia Ring vessels Reproductive organs Ventral blood vessel Ganglion Brain Mouth Dorsal blood vessel Crop Gizzard Body segments Setae

11 Compare/Contrast Table
Section 29-1 Compare/Contrast Table Comparing Invertebrates Major Characteristics Germ Layers Body Symmetry Cephalization Coelom Early Development Annelids Three Bilateral Present True coelom Protostome Mollusks Three Bilateral Present True coelom Protostome Arthropods Three Bilateral Present True coelom Protostome Echinoderms Three Radial (adults) Absent (adults) True coelom Deuterostome

12 The Mollusk Body Plan Section 27-4 Squid Snail Shell Mantle cavity
Foot Gills Digestive tract Clam Early mollusk

13 Compare/Contrast Table
Section 29-1 Compare/Contrast Table Comparing Invertebrates Major Characteristics Germ Layers Body Symmetry Cephalization Coelom Early Development Annelids Three Bilateral Present True coelom Protostome Mollusks Three Bilateral Present True coelom Protostome Arthropods Three Bilateral Present True coelom Protostome Echinoderms Three Radial (adults) Absent (adults) True coelom Deuterostome

14 The Anatomy of a Grasshopper
Section 28-1 Antennae Compound eye Brain Digestive tract Malpighian tubules Heart Reproductive organs Anus Spiracles Tracheal tubes Nerve cord Ganglia Salivary glands Mouth Ventral View Legs Tracheal tubes Spiracles

15 Compare/Contrast Table
Section 29-1 Compare/Contrast Table Comparing Invertebrates Major Characteristics Germ Layers Body Symmetry Cephalization Coelom Early Development Annelids Three Bilateral Present True coelom Protostome Mollusks Three Bilateral Present True coelom Protostome Arthropods Three Bilateral Present True coelom Protostome Echinoderms Three Radial (adults) Absent (adults) True coelom Deuterostome

16 The Anatomy of a Sea Star
Section 28-4 Eyespot Endoskeletal plates Anus Stomach Madreporite Reproductive glands Tube foot Sucker Ring canal Radial canal Digestive glands

17 Invertebrate Cladogram
Section 29-1 Echinoderms Chordates Arthropods Annelids Mollusks Radial Symmetry Roundworms Flatworms Pseudocoelom Cnidarians Deuterostome Development Radial Symmetry Coelom Protostome Development Sponges Three Germ Layers; Bilateral Symmetry Tissues Multicellularity Single-celled ancestor

18 Types of Invertebrate Skeletons
Section 29-2 Types of Invertebrate Skeletons Type of Skeleton Hydrostatic Exoskeleton Endoskeleton Sponges Simple (spicules or spongin) Cnidarians X Flatworms X Roundworms X

19 Types of Invertebrate Skeletons continued
Section 29-2 Types of Invertebrate Skeletons continued Type of Skeleton Hydrostatic Exoskeleton Endoskeleton Annelids X Mollusks Some Some (shells) Arthropods X Echinoderms X

20 Invertebrate Digestive Systems
Section 29-2 Intestine Gizzard Crop Mouth/anus Pharynx Mouth Gastrovascular cavity Annelid Anus Gastrovascular cavity Cnidarian Arthropod Crop Pharynx Anus Pharynx Mouth Mouth/anus Stomach and digestive glands Rectum Flatworm Intestine

21 Invertebrate Respiratory Systems
Section 29-2 Tracheal tubes Gill Siphons Movement of water Spiracles Insect Mollusk Airflow Spider Book lung

22 Invertebrate Circulatory Systems
Section 29-2 Heartlike structure Hearts Small vessels in tissues Heart Blood vessels Sinuses and organs Blood vessels Heartlike structures Insect: Open Circulatory System Annelid: Closed Circulatory System

23 Invertebrate Excretory Systems
Section 29-2 Flame cells Flatworm Excretory tubules Nephrostome Excretory pore Flame cell Excretory tubule Nephridia Digestive tract Annelid Malpighian tubules Arthropod

24 Invertebrate Nervous Systems
Section 29-2 Arthropod Brain Ganglia Ganglia Brain Nerve Cells Flatworm Cnidarian Mollusk

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