1. Chapter 9.1 & 9.2
Animals

2. POINT > Define animal characteristics
POINT > Describe levels of organization in animals
POINT > Describe how animals are classified
POINT > Identify types of symmetry in animals

3. POINT > Describe animal characteristics
All animals are multicellular
All animals are heterotrophs
Animal cells do not have a cell wall
All animals move at some point in lifetime

4. POINT > Describe levels of organization in animals
Animals vary from very simple to very complex
We can describe 4 levels of organization:
1. Cellular organization: the most simple, just cells working together

5. POINT > Describe levels of organization in animals
We can describe 4 levels of organization:
2. Tissue organization: a tissue is a group of similar cells working together for some function
Ex. Muscle tissue, nervous tissue, liver tissue, skin tissue

6. POINT > Describe levels of organization in animals
We can describe 4 levels of organization:
3. Organ organization: an organ is a group of tissues working together for some function
Ex. Brain, heart, liver, eye, kidney, lung

7. POINT > Describe levels of organization in animals
We can describe 4 levels of organization:
4. Organ system organization: an organ system is a group of organs working together for some function
Ex. Circulatory system, digestive system, skeletal system

8. POINT > Describe how animals are classified
Taxonomy:
Kingdom
Phylum
Class
Order
Family
Genus
Species

9. CHECK:
What are 4 characteristics of animals?
What is a tissue?
What is an organ system?
What is an organ?

10. POINT > Identify types of symmetry in animals
If something has symmetry, it can be divided into equal halves
The line of symmetry is the line that divides the two halves

11. POINT > Identify types of symmetry in animals
There are two types of body symmetry in animals:
Radial symmetry
Objects with radial symmetry have many lines of symmetry

12. POINT > Identify types of symmetry in animals
Animals with radial symmetry include jellyfish, sea stars, anenomes, sea urchins

13. POINT > Identify types of symmetry in animals
Animals with radial symmetry live in the water, are slow moving, and are not very complex

14. POINT > Identify types of symmetry in animals
2. Bilateral symmetry
Objects with bilateral symmetry have only one line of symmetry

15. POINT > Identify types of symmetry in animals
Most animals have bilateral symmetry

16. POINT > Identify types of symmetry in animals
Animals with bilateral symmetry are more complex
Sense organs and a more streamlined body allow animals with bilateral symmetry to move faster

17. CHECK:
True or false. Animals with bilateral symmetry are usually more complex and move faster.
What is an animal with radial symmetry?
What is an animal with bilateral symmetry?
Do most animals have radial or bilateral symmetry?

18. Homework:
Read pages
Finish Study Guide
S.A. #1-3 page 299
# 1-2 page 302
GRAS