P6 SCI (photosynthesis)

• Living things get energy directly or indirectly from the sun.
• The rate of photosynthesis can be affected directly by 3 factors: amount of carbon dioxide, temperature and light intensity
• Photosynthesis is a process where all plants make food in the presence of light.
• Excess sugar will be stored as starch in different plant parts: roots, stem or fruits
• Oxygen produced by the plant during photosynthesis will be released through the stomata.
• Carbon dioxide enters the leaf through the stomata.
• Transpiration is the loss of water vapour from the surface of the leaves.
• In order to photosynthesise, a plant needs light, water and carbon dioxide.
• In a starch test, iodine solution will be dropped on a few items/foods. If it turns dark blue, starch is present. If it stays as yellowish brown, starch is absent.