Simple Invertebrates Ch 15.1 7th
Lecture 2 support and protection 2nd sem 2008-2009
Review the Animal Kingdom 4 Major Characteristics? Multicellular Eukaryotic Heterotrophs Cells lack cell walls.
I. I.Platyhelminthes Flatworms - Dorsoventrally flattened Simplest bilaterally symmetrical organisms First organs and organ systems** Central nervous system.
I.Keystone Species. I.Echinodermata A.Echinoidea (Sea urchins, Sand dollars) Approximately 1000 speciesApproximately 1000 species Includes heart urchins,
What is an Animal?. Characteristics of Animals All animals have several characteristics in common. What are the four common characteristics of animals?
Kingdom Animalia
What is an Animal? A multicellular organism of the kingdom Animalia that uses locomotion, metabolism, pronounced response to stimuli, and fixed bodily.
Kingdom Animalia Characteristics EukaryoticMulticellularHeterotrophic –ingest food Specialized cells –Most have tissues No cell wall Most motile Most.
Animal Diversity KEY FEATURES OF BODY PLANS ABBOTTS COLLEGE PAGE 73.
Chapter 42: Gas Exchange 1.Why is gas exchange important? -Aerobic organisms need O 2 for oxidative phosphorylation (making ATP) -CO 2 from citric acid.
Phylum Mollusca “soft- bodied”. 4 Primary Classes –Class Gastropoda: Snails, conchs, slugs, sea slugs, sea hares, limpets, etc. (very diverse)