Levels of Organization for Living Organisms

Section 2.1 Summary – pages In Biology we study the portion of Earth that supports life, called the Biosphere It extends from high in the atmosphere to the bottom of the oceans. BIOSPHERE

Section 2.1 Summary – pages Ecologists have organized the living world into levels— the organism by itself population community and ecosystem LEVELS OF ORGANIZATION

Section 2.1 Summary – pages An individual living thing that is made of cells, uses energy, reproduces, responds, grows, and develops. LEVELS OF ORGANIZATION ORGANISM

SPECIES A group of closely related organisms that are very similar to each other and are usually capable of interbreeding and producing fertile offspring.

Section 2.1 Summary – pages A population is a group of organisms, all of the same species, which interbreed and live in the same area at the same time. LEVELS OF ORGANIZATION POPULATION

Section 2.1 Summary – pages LEVELS OF ORGANIZATION COMMUNITY A biological community is made up of interacting populations in a certain area at a certain time (different groups of species in the same area)

Section 2.1 Summary – pages A change in one population in a community may cause changes in the other populations. COMMUNITY

Section 2.1 Summary – pages Biological communities that interact with each other in a given area and PLUS the abiotic factors of that area. LEVELS OF ORGANIZATION ECOSYSTEM

Consumer Carnivore Omnivore Herbivore Producer Chemosynthesis Photosynthesis Detrivore- feed on plant and animal remains Decomposer- break down organic matter Ex.) Ex.)crab, snail, earthworms Ex.) bacteria, fungi

Define the following terms and give two examples of each…. You may choose to draw the examples, make a diagram, or just write down your examples. Biotic Abiotic Biomass Food Web Food Chain Symbiosis Mutualism Commensalism Parasitism Predation QUIZ TOMORROW ON THESE NOTES AND TERMS