AIM: What is an animal? OBJ: Given notes and activity sheet SWBAT explain animal body organization, animal classification and the major functions of animals.

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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 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)

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)

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

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)

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

Symmetry

Symmetry