Levels of Organization

Master biological organization: cell, tissue, organ, and system. Practice science concepts!

Match Tissue A group of same cells acting together to perform specific functions Organ A group of tissues working together to perform a specific function Organ System A group of organs working together to perform a specific task Organism An individual living thing, such as a bacterium, plant or animal Cell The smallest unit of life. Organ: Examples in animals include lungs, brain, liver, etc., whereas roots, stem, and leaves are the different types in plants.Tissue: This level is a combination of different types of cells which perform specialized functionsOrgan System: Organs working together to perform certain functions. Examples are the circulatory system in animals, and the vascular system in plants.Organism: the fully functional form of a living being that can thrive in a particular environment.Cell: It is considered as the basic unit and building block of life. It is bound by a cell membrane, and possesses a nucleus which acts as its brain.