D:\533576583.doc IN PHOTOSYNTHESIS: PLANTS CHANGE LIGHT ENERGY TO SUGARS AND STARCHES Image from: home.clara.net/steve.thackery/stoves/beginnin.htm Plants take in water from the soil through their ………………. Plants also take in ………………. …………………….. through pores in their l………….. In the leaf, light energy is used to combine water and carbon dioxide to make s……………... and s……………….. O…………. is given out by the leaves as a waste product during photosynthesis . -1- D:\533576583.doc IN RESPIRATION: PLANTS AND ANIMALS CHANGE SUGARS AND STARCHES TO USEFUL ENERGY AND HEAT ENERGY IN THEIR BODIES Image from: home.clara.net/steve.thackery/stoves/beginnin.htm Animals and p………….. break down sugars and starches in the process of r………………. . O……………….. is normally needed for respiration. C………………….. …………………. gas is released into the atmosphere during respiration. W………… ……………… is also released. -2- D:\533576583.doc IN COMBUSTION (BURNING): PLANT AND ANIMAL TISSUES ARE CONVERTED TO HEAT ENERGY When wood is burned, c……………….. d……………. gas and water vapour are released. This is very like the process of ………………….. When fossil fuels are burned, they too give off carbon dioxide and water vapour. Fossil fuels include:…………………… ……………………… ……………………. Diagram to show differences between photosynthesis, respiration and combustion -3-