Transcript Document

1C5_Photosynthesis
OB48
Describe, using a word equation, how
plants make their own food through
photosynthesis
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“photosynthesis”
“photo” means light…
“synthesis” means to make…
…so what do you think the word photosynthesis could mean?
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how plants make their food
oxygen
Energy from sunlight,
with chlorophyll as a
catalyst, is used to
combine CO2 and H2O to
form glucose and
release O2
chlorophyll
glucose
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Carbon dioxide
Photosynthesis word equation
Watch the animation again…
Can you write what is
happening as a
word equation?
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oxygen
chlorophyll
Carbon dioxide
glucose
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Photosynthesis word equation
Carbon dioxide plus water,
with light and chlorophyll,
gives glucose and oxygen
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Ever wondered why?
Some plants lose their leaves in winter?
It is because they find it difficult to carry
out photosynthesis…
…using your word equation, can you give
TWO reasons a plant could not carry
out photosynthesis in winter?
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1C5_Photosynthesis
OB48
Describe, using a word equation, how
plants make their own food through
photosynthesis
www.juniorscience.ie