Levels Of Organization Notes Title your page: Next topic: Levels Of Organization Notes Read Only: Hierarchy – (noun) 1: a series of ordered groupings of people or things within a system

Learning Target: Today I am learning about the levels of organization. So that I can understand each level that makes up an organism. I’ll know I’ve gotten it when I can list each level in the correct order, give an example of each and explain how they are interrelated to one another.

Cell Tissue Organ Organ System Organism Population Community Ecosystem smallest largest This slide is READ ONLY. In 6th grade, you covered “organism” to “ecosystem.” This year, we will examine some smaller levels of organization.

Read Only: Set your notes up as a flow chart with definitions and pictures

Level 1 : Cells Cells are the basic unit of life –this is where life begins Cells can be specialized (have a certain function) Function = job Function is related to the cell structure Structure = how parts of the cell are put together Shape Material it’s made from Structure of a brain cell is different from muscle cell

Level 2: Tissues Tissue = group of cells that work together to do a specific job Ex: Heart muscle tissue is made of heart muscle cells Animals have 4 types of tissue: nerve, muscle, connective, protective Plants have 3 types of tissue : transport, protective, ground

Level 3: Organs Organ = structure that is made up of 2 or more tissues working together to get a specific job done Ex: Stomach – muscle tissue moves food, special tissues make chemicals to digest food, connective tissue holds stomach together, nervous tissue sends messages back and forth between the stomach and brain How many organs can you name?

Level 4: Organ Systems Organ system = group of organs working together to perform a specific function Each organ system has a specific job Circulatory, respiratory, excretory, digestive, endocrine, nervous, etc..

All the organ systems working together form organisms.

Structure of Animals Each levels relies on one another to function properly. Without the organ systems, the organs cannot work. Without the tissues, the organs wouldn’t function. Without cells then nothing could survive. Cells -basic unit of an animal’s structure -become specialized _______________________________ Tissues -made of cells that work together to perform a specific function __________________________________________ Organs -made of different types of tissues that work together to perform a specific function ____________________________________________________ Organ Systems -made of organs that work together to perform a specific function _____________________________________________________________ Organisms