Upload
derrick-harper
View
222
Download
1
Tags:
Embed Size (px)
Citation preview
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!
lightpigments
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:
• CO2• Water• Sunlight• Glucose• Oxygen
Plant Challenges:
• Extreme Dry Heat (Desert)• Tropical Rainforest• Water Lilly• Deciduous forest in Autumn• Deciduous forest in Spring• Shallow Ocean• Deep Ocean
Sunlight reaches the leaf and energizes chlorophyll
CO2 enters through the stoma
Upper Epidermis
Vein
Nam
es: _
____
____
____
____
____
____
____
____
_ Cl
ass
Perio
d: _
____
____
____
____
Glucose (C6H12O6) and Oxygen (O2) are made in the chloroplasts from CO2 and water
O2 is released through stoma
Chloroplast
Stoma
Wat
er (H
2O) e
nter
s th
e le
af th
roug
h th
e st
em
and
vein
s fr
om th
e ro
ots.
Inside the leaf
The finished model. . .