Photosynthesis and Respiration
Chapters 8-9
Chapter 8 Vocabulary and Notes
• Make a heading in your notebook for Chapter
8 and define the terms below:
– ATP
– Photosynthesis
– Pigments
– Chlorophyll
What is Photosynthesis?
• Photo = “Light”
• Synthesis = “To put together”
• Photosynthesis = “Putting together with light”
Q: What is being put together in photosynthesis?
Q: Where does photosynthesis occur?
The Formula:
• MEMORIZE THIS!
light
pigments
6CO2 + 6H2O ------------------ C6H12O6 + 6O2
THE CHALLENGE:
Q: How do plants manage this in different
environments?
Today, you will be working with a team of 4 to
build different “leaves” that can best survive and
successfully photosynthesize in different
environments.
What plant parts do you have?
Waxy Cuticle
• Used by plants to protect their leaves and keep
them from losing water in heat or harsh light or
gaining too much water in wet climates
Leaf Epidermal Cells
• Green tight-knit cells that allow light through
but don’t contain very many chloroplasts
Stomata
• Openings on the leaves to let gases like CO2,
O2 and H2O vapor pass through
Pigments
• Chloroplasts: Organelles containing the green
pigment chlorophyll. These are the primary
pigments used by plants for photosynthesis
• Accessory Pigments: Used when chlorophyll is
not available (fall, deep ocean, etc)
– Carotenoids: Orange and Yellow pigments
– Anthocyanins: Red and Purple pigments
Veins
• Veins contain the vascular tissue (xylem and
phloem) that can carry water and sugars to the
plants.
• Water travels up from the roots and sugars travel
down from the leaves.
Labels you need:
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CO2
Water
Sunlight
Glucose
Oxygen
Plant Challenges:
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Extreme Dry Heat (Desert)
Tropical Rainforest
Water Lilly
Deciduous forest in Autumn
Deciduous forest in Spring
Shallow Ocean
Deep Ocean
CO2 enters through the stoma
Vein
Upper Epidermis
Names: __________________________________
Class Period: _________________
Sunlight reaches the leaf and energizes chlorophyll
O2 is released through stoma
Inside the
leaf
Stoma
Chloroplast
Water (H2O) enters the leaf through the stem
and veins from the roots.
Glucose (C6H12O6) and Oxygen (O2) are made
in the chloroplasts from CO2 and water
The finished model. . .