Photosynthesis
Photo
Photosynthesis
synthesis
Take note of the following from the video:
• What are the requirements for
photosynthesis?
Photo = light
Synthesis = put
something
together
Using light to put
something
together
•
Explain the process of photosynthesis.
•
What happens during photosynthesis?
•
Why is this process important?
•
Chemical equation for photosynthesis.
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2
Photosynthesis
Photosynthesis
What is Photosynthesis?
What is Photosynthesis?
• Special to green
SUNLIGHT
6CO2 + 6H2O =======> C6H12O6 + 6O2
•
CO2 is Carbon Dioxide
O2 is Oxygen
H2O is Water
C6H12O6 is Glucose (Simple Sugar)
Provides:
•
•
WHERE:
•
•
plants.
Food for the plant
Oxygen to other forms of life
Converting light energy to chemical
energy in the form of glucose (simple
sugar).
Needs light energy, CO2 and H2O to
make glucose (food for plants).
SUNLIGHT
6CO2 + 6H2O =======> C6H12O6 + 6O2
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4
Photosynthesis
Respiration
Where does photosynthesis take place?
• It takes place in the leaves of
•
the
plants mainly in the chloroplast.
Chloroplast:
•
•
Part of the plant that contains the green pigment
called the chlorophyll.
Chlorophyll:
•
•
Makes plants green.
Stores sunlight.
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6
Respiration
Respiration
What is respiration in plants?
Photosynthesis VS Respiration
… that happens
both day and
night.
… is the exact
opposite of
photosynthesis.
… is when plants
use sugar and
oxygen…
… to produces
water, carbon
dioxide and
energy.
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Photosynthesis
Respiration
Produces sugar from light
energy
Burns sugar for energy
Stores energy
Releases energy
Occurs only in cells with
chloroplasts
Occurs in most cells
Releases oxygen
Uses oxygen
Uses carbon dioxide and
water
Produces carbon dioxide,
water & energy
Requires light
Occurs in dark and light
8
Respiration
To summarize…
Photosynthesis
Respiration
Similarities
• Requires
carbon dioxide,
water and
sunlight to
produce sugar
and oxygen
• Can occur in
plants only
•
•
Both are done
by living cells
•
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Requires sugar
and oxygen to
produce carbon
dioxide, water
and energy
Can occur in
Plants and
animals