1. AIM: What is an animal? OBJ: Given notes and activity sheet SWBAT explain animal body organization, animal classification and the major functions of animals with 70% accuracy. DN: Text, read p ACT: Complete What is an Animal? Activity Sheet and How are animals classified? / Symmetrical Critters Activity Sheet. HW: Pop Quizzes soon. Text, read p.12-14, Complete p.14, Q:1a-c; Study for Interim Exam, Nov 6; Invertebrate Exam, Nov 12.

2. Cell, Tissue, Organ, Organ System

3. LESSON NOTES BODY ORGANIZATION Cell→ Tissue →Organ→ Organ System
simple complex
Cell: basic unit of an organism (life)
Tissue: group of cells that have the same function (activity; do the same thing)
Types of tissues: muscle, nervous, connective, epithelial (= covering; skin and organ lining)

4. NOTES
Organ: contains different tissues but performs a specific function (activity);
example:
heart – pumps blood;
stomach – breaks down solid food
Organ System: group of different organs working together to perform a major (complex) function
Types of Human Organ Systems: Skeletal, Muscular, Digestive, Circulatory (see below), Lymphatic, Respiratory, Excretory, Nervous, Endocrine, Reproductive, Immune
Example: Circulatory System – transports materials to (nutrients) and from (waste) body cells (see text, p.9)

5. Functions of Animals 1] get food and oxygen
2] homeostasis (internal conditions stable)
3] locomotion (move)
4] reproduce
I) sexual reproduction: most animals, two parents (male, female).
fertilization: joining of sperm and egg cell to form zygote (fertilized egg).
II) asexual reproduction: few animals, single parent

6. Classification of Animals
similarity between animals (“classify”)
2) body structure
3) embryological development (ontogeny)
4) DNA (inherited characteristics)
Invertebrates: no backbone
Vertebrates: backbone (vertebral column)

8. Animal Symmetry
Symmetry: balanced arrangement of parts Asymmetrical: no symmetry; example: sponges Bilateral Symmetry: line dividing organism into halves that are mirror images; example: fish, amphibians, reptiles, mammals (humans). Radial Symmetry: many lines that all go through a central point; example starfish

9. Symmetry

10. Symmetry