Life & Living: Photosynthesis
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The process by which plants make food is called? (1)
Photosynthesis (fo-toe-sin-the-sis)
Where does this normally take place in green plants? (1)
In the leaves.
All green plants contain a substance called? (1)
Chlorophyll (Klor-o-fil)
The purpose of chlorophyll is to absorb ___________ from __________ ? (2)
ENERGY from SUNLIGHT
Plants make a gas called _________ ____________ from the air? (1)
Carbon Dioxide
Plants absorb ____________ through their roots? (1)
Water
Which gas in the air do living things need to stay alive? (1)
Oxygen
Plants use the _________ from sunlight, __________ dioxide gas from the air and ___________ to make ___________ (sugar). (4)
Energy Carbon Water Glucose
Plants change some of the glucose they make in their leaves to ______________? (1)
Starch
Name the 5 areas where plants can store starch in? (5)
Plants can store starch in the FRUIT, ROOT, LEAVES, STEM and SEEDS.
When testing for starch in a plant or food you can use a substance called ___________ which is yellow-brown in colour? (1)
Iodine
What colour does iodine change to when starch is present? (1)
it changes to a BLUE-BLACK colour
What is an hypothesis? (4)
It is a possible EXPLANATION for an OBSERVATION that you can TEST by further INVESTIGATION Simple version: What do you think is going to happen (a prediction)
What are the 5 steps when writing an experiment? (5)
• Write the HYPOTHESIS (the prediction) • The METHOS. (Planning and conducting the investigation) • Recording the RESULTS (are they done correctly in tables or graphs) • The CONCLUSION (does the result make sense) • The EVALUATION (was the hypothesis right or wrong, is there a way to get a better result)
Plants use up ____________ ____________ and give off _____________ during photosynthesis.
Carbon dioxide Oxygen
Animals and humans breath in __________ and breath out ______________ _____________
Oxygen Carbon dioxide