Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Photosynthesis Plants use the Sun to make Food Photosynthesis • Photosynthesis: is the process by which plant cells capture the sun’s energy and use it to make food. • To do this, plants convert CO2 (carbon dioxide) and H2O (water) into O2 (oxygen) and sugars (glucose). A 2-Stage Process • Stage 1: Chloroplasts in leaves capture the sun’s energy. Pigments such as chlorophyll (which gives chlorplasts their green color) absorb the sunlight. • Stage 2: The cell uses H2O and CO2 to produce sugars. (More on this stage on the next slide). ------> 2nd Stage (cont.) • In this stage, H2O is absorbed through roots and transported up to leaves. • CO2 is absorbed through small openings on leaves called stomata. • Inside chloroplasts, the H2O and CO2 undergo chemical reactions powered by the solar energy captured in stage 1. This process produces O2 (oxygen) which plants give off as a waste gas (lucky for us!) and glucose (a sugar) which is used by plants and other living things as a source of energy (food!). The Photosynthesis Equation • 6 CO2 + 6 H2O light energy ===> • C6H12O6 + 6 O2 (glucose) (oxygen)