2. What do you think when you hear the word Animal? A dog or cat maybe But what about an animal like this one?

3. Animalia Largest Kingdom Most variety of species Animalia

4. Characteristics of Animals Multicellular – All animals are made of more than one cell That cell is Eukaryotic - Has a nucleus and Organelles No cell wall Animalia

5. Characteristics of Animals Reproduction – Almost all animals do sexual reproduction When the egg is fertilized it forms an embryo Embryo is an organism at an early stage of development A few animals can reproduce Asexually Animalia

6. Characteristics of Animals Specialized parts – An animals body has distinct parts that do different things Differentiation is the process where cells develop into a specific cell type Cells of the same type group together into tissues Most animals have groups of tissues called organs Animalia

7. Characteristics of Animals Movement – Most animals can move from place to place Some animals only move during part of their lives ex. Sea Anemones when young they swim around and then they anchor themselves as adults Animalia

8. Characteristics of Animals Consuming – Animals cannot make their own food. They have to consume something else for energy. We call them Consumers, because they consume, plants produce their own food so they are call Producers Animalia

9. Behavior of Animals Animals react to their environment in ways that other organisms don’t even come close to replicating. These behaviors are either Innate or Learned Innate Behavior – a behavior that the animal knows without need for experience or learning, we often call this “instinct”. Example baby whale knows how to swim Learned Behavior – A behavior that has been learned, like our behavior to change our innate behavior to make sounds into language Animalia

10. Classification of Animals Animals are divided into two main groups based on a single trait: Backbone Invertebrates – Do not have a backbone, but are the most numerous representing 95% of all animals Vertebrates – Have a backbone, are only 5% of all animals but include the largest animals Animalia

11. Invertebrates Invertebrates have three basic body plans Bilateral Symmetry – the body has two sides that mirror each other. Animalia

12. Invertebrates Invertebrates have three basic body plans Bilateral Symmetry – the body has two sides that mirror each other. Radial Symmetry – the body is organized like spokes on a wheel, each one mirrors the next Animalia

13. Invertebrates Invertebrates have three basic body plans Bilateral Symmetry – the body has two sides that mirror each other. Radial Symmetry – the body is organized like spokes on a wheel, each one mirrors the next Asymmetry – there is no way to draw a line and see a mirror on either side Animalia

14. Invertebrates Have Neurons – specialized tissue that makes fibers and transmits information and allow the animal to sense their environment. Ganglia – is a mass of nerve cells, that control different parts of the body Gut – is a pouch lined with cells that release chemicals to break down food Sometimes the gut is in a body cavity(open area) called the Coelem. Animalia

15. Types of Invertebrates Sponges Simplest Animals No guts, Coelem, or neurons even! Reproduce sexually and asexually Animalia

16. Types of Invertebrates Cnidarians Jellyfish, Sea Anemones, Corals, and Hydras Have some complex tissue Two body forms(Medusa and Polyp) Animalia

17. Types of Invertebrates Flatworms Simplest worms Many are parasites (flukes, tapeworms) Animalia

18. Types of Invertebrates Roundworms Worms with round bodies Ring of ganglia forms a simple brain Animalia

19. Types of Invertebrates Mollusks Snails, Slugs, Clams, Oysters, Squids, Octopus, and Cuttlefish Divided into three groups; Gastropods, Bivalves, Cephalopods Complex ganglia, Cephalopods have brains Pumping blood Animalia

20. Types of Invertebrates Annelid Worms Earthworms, Marine worms and Leeches Called annelids because they have segments, when the body repeats in patterns Most complex of all the worms Animalia

21. Types of Invertebrates Arthropods They are segmented like annelids but specialized Jointed limbs (arthropod means jointed foot) External Skeleton (exoskeleton) Head, well developed brain and a nerve cord (not quite a spine but getting really close) Animalia

22. Types of Invertebrates Echinoderms Sea stars, Sea urchins and Sand dollars Spiny Skinned Develop from larvae with bilateral symmetry to adults with radial symmetry Animalia