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. 6-11

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.

Cell, Tissue, Organ, Organ System

LESSON NOTES

BODY ORGANIZATIONCell→ 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)

NOTESOrgan: 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, ImmuneExample: Circulatory System – transports materials to (nutrients) and from (waste) body cells (see text, p.9)

Functions of Animals 1] get food and oxygen2] homeostasis (internal conditions stable)3] locomotion (move)4] reproduceI) 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

Classification of Animals1) similarity between animals (“classify”)2) body structure3) embryological development (ontogeny)4) DNA (inherited characteristics)

Invertebrates: no backboneVertebrates: backbone (vertebral column)

Animal SymmetrySymmetry: balanced arrangement of parts

Asymmetrical: no symmetry; example: spongesBilateral 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

Symmetry

Symmetry