Photosynthesis
Iodine
A chemical that tests for the presence of starch; it is brown in the bottle, but does black when starch is present
oxygen
a clear gas with no smell; it is found in our atmosphere (the air). Plants produce oxygen as a result of photosynthesis
carbon dioxide
a gas found in the air; it is breathed out by humans and other animals. Plants also produce it, but use lots up during photosynthesis.
chlorophyll
a green pigment in plants that absorbs the light energy used to carry out photosynthesis
photosynthesis
a process that occurs is plants and some other organisms; carbon dioxide is used to make sugars
starch
a substance which plants make when they have excess sugars (storing starch is a way of storing energy for later use)
producer
able to make your own food. Plants are an example of this
consumer
if you have to eat other organisms to get energy you are a consumer. Animals are consumers.
light
light is a type of energy; it is sometimes called 'radiant energy'. Plants use it during photosynthesis.
chloroplasts
the part of a plant cell where photosynthesis happens; they contain the chlorophyll pigment
roots
the part of the plant that can take up water
carbon dioxide, water and light
three things plants need in order to undertake photosynthesis
stomata
tiny openings (holes) on the underside of a leaf
oxygen and sugars
two things produced by plants during the process of photosynthesis
leaves
where photosynthesis occurs (happens)