Levels of Organization. A S c h u l m a n L a b s p r o d u c t i o n. Life is organized into 5 levels:. Cells Tissues Organs Organ systems Organisms Populations Ecosystems. There are 5 Levels of Organization in Multicellular Organisms:. 1. Cells 2. Tissues 3. Organs
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A S c h u l m a n L a b s p r o d u c t i o n
4. Organ Systems
The cell is the basic unit of structure and function of a living thing.
Cells are specialized by size and shape for the job they do
The amoeba above is made of only one cell and it must perform all the jobs of the organism.
Tissues are made of the same type of cells grouped together to do a specific job.
Examples: 4 different types of animal tissues are epithelial, muscle, nervous, and connective. This pink sponge has only cells but they are not organized into tissues. The blue Man-o-war has tissues but no organs.
Organs are made up of different tissues that work together to do a job.
Example: a heart is an organ made of all four tissues, this coral polyp is an organ and a leaf is a plant organ.
An organ system is a group of organs working together.
Example: Human organ systems include circulatory, reproductive, digestive, nervous, respiratory.
Plant organ system-roots, stems,leaves= transport system.
Sum of all cells, tissues, organs and organ systems makes an organism.
A group of the same type of organisms all living together in the same place.
Populations living together in one area.
All the ecosystems around the world make up the biosphere.