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Presentation slides for Photosynthesis. (Animations are not available & slide 22 is an extra)
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Photosynthesis
Wednesday, October 26, 11
Introduction
• Where do we get our food?
• Plant
• How do plants make food?
• Photosynthesis
Wednesday, October 26, 11
Time to fill in your notes
• Plants make their own food. This process is called photosynthesis.
• Glucose is the product.
Wednesday, October 26, 11
What is photosynthesis?
• A process where plants make their own food by absorbing carbon dioxide, water and light energy.
Wednesday, October 26, 11
What are the products?
• They produce glucose and oxygen.
Wednesday, October 26, 11
What do you give plants so that they don’t die?
Carbon Dioxide Water
Light Energy
Wednesday, October 26, 11
What are the products?
Glucose Oxygen
Wednesday, October 26, 11
Equation for Photosynthesis
Chlorophyll
Wednesday, October 26, 11
Effect of Light Intensity on the Rate of Photosynthesis
Wednesday, October 26, 11
Effect of temperature on the Rate of Photosynthesis
Wednesday, October 26, 11
Do you think it is good to supply light to plants for 24 hours? Why?
• No
• It is because the plant will keep on growing and run out of starch. Hence, it will die from starvation.
• The rate of transpiration will also be high.
Wednesday, October 26, 11
Why are there more plants in the equatorial region than the tundra region?
• It is because, the optimum conditions are achieved.
Wednesday, October 26, 11
Work on these questions with your friend. (Don’t use your notes)
• What are the ingredients for photosynthesis?
• What are the products for photosynthesis?
• What is the main purpose of photosynthesis?
Wednesday, October 26, 11
Answers
• Carbon dioxide and water.
• Glucose and Oxygen.
• Plants have to photosynthesize so that they can get glucose for growing.
Wednesday, October 26, 11
Summary
New materials
Lipids, Proteins & Sugar
StarchCaptured by
Contained in
Takes in
Gives out
Needed by
Transformed & stored as
Absorbed by
Used to produce
Such as
Inside
Produces
Needed for
Needed for
Wednesday, October 26, 11
Summary
New materials
Lipids, Proteins & Sugar
StarchCaptured by
Contained in
Takes in
Gives out
Needed by
Transformed & stored as
Absorbed by
Used to produce
Such as
Inside
Produces
Needed for
Needed for
Green plant
Wednesday, October 26, 11
Summary
New materials
Lipids, Proteins & Sugar
StarchCaptured by
Contained in
Takes in
Gives out
Needed by
Transformed & stored as
Absorbed by
Used to produce
Such as
Inside
Produces
Needed for
Needed for
Chlorophyll
Green plant
Wednesday, October 26, 11
Summary
New materials
Lipids, Proteins & Sugar
StarchCaptured by
Contained in
Takes in
Gives out
Needed by
Transformed & stored as
Absorbed by
Used to produce
Such as
Inside
Produces
Needed for
Needed for
ChlorophyllLight
energy
Green plant
Wednesday, October 26, 11
Summary
New materials
Lipids, Proteins & Sugar
StarchCaptured by
Contained in
Takes in
Gives out
Needed by
Transformed & stored as
Absorbed by
Used to produce
Such as
Inside
Produces
Needed for
Needed for
ChlorophyllLight
energy
Carbon dioxide Green
plant
Wednesday, October 26, 11
Summary
New materials
Lipids, Proteins & Sugar
StarchCaptured by
Contained in
Takes in
Gives out
Needed by
Transformed & stored as
Absorbed by
Used to produce
Such as
Inside
Produces
Needed for
Needed for
ChlorophyllLight
energy
Carbon dioxide Green
plant
Oxygen
Wednesday, October 26, 11
Summary
New materials
Lipids, Proteins & Sugar
StarchCaptured by
Contained in
Takes in
Gives out
Needed by
Transformed & stored as
Absorbed by
Used to produce
Such as
Inside
Produces
Needed for
Needed for
ChlorophyllLight
energy
Carbon dioxide Green
plant
Oxygen
Water
Wednesday, October 26, 11
Summary
New materials
Lipids, Proteins & Sugar
StarchCaptured by
Contained in
Takes in
Gives out
Needed by
Transformed & stored as
Absorbed by
Used to produce
Such as
Inside
Produces
Needed for
Needed for
ChlorophyllLight
energy
Carbon dioxide Green
plant
Oxygen
Water Plant growth
Wednesday, October 26, 11
Summary
New materials
Lipids, Proteins & Sugar
StarchCaptured by
Contained in
Takes in
Gives out
Needed by
Transformed & stored as
Absorbed by
Used to produce
Such as
Inside
Produces
Needed for
Needed for
Chlorophyll
Carbon dioxide
Oxygen
Water
Light energy
Green plant
Plant growth
Wednesday, October 26, 11
Games and Animation
• Photosynthesis Animation
• Water for plants (Game)
• Plants need minerals. (Game)
Wednesday, October 26, 11
