1. Plants

2. Multicellular Autotrophs Photosynthetic organisms Kingdom Plantae

3. Roles of Plants in the Environment Photosynthesis Nitrogen fixation Producers in food webs

4. Photosynthesis Process by which plants make energy for themselves – Happens in chloroplast of cell Chlorophyll- pigment found in chloroplast Take in carbon dioxide from the atmosphere Release oxygen

5. Nitrogen Fixation Bacteria on roots of plant change nitrogen in the air into a useable form for other organisms – Most organisms cannot use atmospheric nitrogen

6. Producers Plants are producers in a food web- they produce food for the consumers Basis of food webs and chains All consumers rely on producers Producers are the limiting factor to how large a population of consumers can get