what is starch
TRANSCRIPT
What is Starch?
Let’s find out!
Green plants can make food because they have the green pigment called chlorophyllchlorophyll. Chlorophyll helps to trap sunlight for the plant to make food. The process of making food is called photosynthesisphotosynthesis. Green plants also need water and carbon dioxide to photosynthesize.
SunlightSunlight
Carbon dioxideCarbon dioxide
waterwater
The leaves of the green plants are like factories. They make lots of food in the presence of sunlight, water and carbon dioxide. The food that green plants make is called glucoseglucose. Glucose is a kind of sugar which is broken down by plants to be used for energy. When too much glucose is made, the excess is stored in plant parts as starchstarch.
Glucose Glucose Starch Starch
To test for the presence of starch, the iodine iodine solution testsolution test is used. Starch will interact with iodine solution and turn the iodine solution from brownbrown to dark bluedark blue.
Starch StarchStarch
Starch
Iodine solution Iodine solution
The function of some plant parts is to store food made by plants. The stored form of this food is called starch.
Starch StarchStarch
Starch