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Organisms that can capture energy from sunlight or chemicals and use that energy to produce food are called autotrophs, or primary producers. The process in which autotrophs capture light energy and use it to convert carbon dioxide and water into oxygen and sugars is called photosynthesis.rganisms that can capture energy from sunlight or chemicals and use that energy to produce food are called autotrophs, or primary producers. The process in which autotrophs capture light energy and use it to convert carbon dioxide and water into oxygen and sugars is called photosynthesis.
Just like you, plants need food to grow! But what is plant food, and how do plants get it? Plants turn water and air into food. Water from the ground is sucked up by the roots. Carbon dioxide from the air is breathed in by the leaves. Energy from the sun is collected by the leaves. The energy is used to turn the water and carbon dioxide into food. The waste from making plant food is oxygen. Animals, humans included, need oxygen to survive. So, this process is very important for plants AND animals. This amazing process, of using the sun's energy to make food, is called photosynthesis. Did you enjoy learning about plant food?