Lesson 2
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List the leaf layers from the tops and bottom
Waxy Cuticle Upper Epidermis Palisade Mesophyll Spongy Mesophyll Lower Epidermis Waxy Cuticle
What is the thing on the bottom layer?
Stoma
What are the empty spaces in the leaf called
Air Space
What is the function of the Waxy Cuticle?
Reduces Water Loss (Waterproof)
What is the function of the Upper Epidermis?
Protects leaf & creates wax for the Waxy Cuticle.
Does the Upper Epidermis contain any chloroplasts?
No
Why doesn’t the Upper Epidermis contain any chloroplasts?
It is purposely a 1 cell thick layer to let light energy in for the Palisade Mesophyll
What is the function of the Palisade Mesophyll
Contains the most chloroplasts, where the most photosynthesis occurs
What cells are in the Palisade Mesophyll?
Palisade cells
Are the Palisade cells packed tightly or loosely?
Packed together tightly
What is the function of the Spongy Mesophyll?
Movement of gases through the leaf
What does the Spongy Mesophyll contain?
Air Space
What is the function of the the Lower Epidermis?
Contains stomata which allows the movement of gases into & out of the leaf
What is the function of the Stomata?
To create an opening for gas exchange
What is the function of the Vascular Bundle?
Allows water & nutrients to be transported throughout the plant
What is the function of the Xylem?
Carries water & minerals to the leaf from roots
Is the Xylem bigger or smaller than the Phloem?
Bigger
What is the function of the Phloem?
Transports SUCROSE from leaves to other parts of plant
Is the Phloem bigger or smaller than the Xylem?
Smaller