Download Document

1C5_Photosynthesis
OB48
Describe, using a word equation, how
plants make their own food through
photosynthesis
www.juniorscience.ie
“photosynthesis”
“photo” means light…
“synthesis” means to make…
…so what do you think the word photosynthesis could mean?
www.juniorscience.ie
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
www.juniorscience.ie
Carbon dioxide
Photosynthesis word equation
Watch the animation again…
Can you write what is
happening as a
word equation?
www.juniorscience.ie
oxygen
chlorophyll
Carbon dioxide
glucose
www.juniorscience.ie
Photosynthesis word equation
Carbon dioxide plus water,
with light and chlorophyll,
gives glucose and oxygen
www.juniorscience.ie
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?
www.juniorscience.ie
1C5_Photosynthesis
OB48
Describe, using a word equation, how
plants make their own food through
photosynthesis
www.juniorscience.ie