Botany
Spring Quarter
Lake Tahoe Community College
Instructor: Sue Kloss
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Chapter 5- Lesson Outline, Terms, and Objectives
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I. Functions of leaves
A. major functions of leaves
B. leaves are shaped to capture light
1. dicot and monocot leaves
2. leaves are simple or compound
3. the petiole
4. the sheath
5. leaf veins
C. arrangement of leaf cells depends on their functions
1. epidermis
a. stomates
b. more numerous on the bottom
c. guard cells
d. trichomes
e. insectivores
2. mesophyll
3. veins consist of vascular bundles that transport food and water
D. Where do new leaves come from?
1. origin
II. leaf form and specialized leaves
A. a leaf’s form may depend on the plant’s age and on the environment
1. cotyledons
2. heterophylly
3. xerophyte
4. hydrophytes
5. mesophytes
6. some leaves are modified for special functions
III. Commercially important fibers from leaves and stems
A. fibers from plants
1. cotton
2. elongated schlerenchyma fibers
3. hard fibers
4. soft fibers
Botany - Chapter 6
abscission
auricles
blade
boundary layer
bulbs
bundle sheath
compound leaves
cuticle
guard cells
fibers
heterophylly
hydrophytes
intercalary meristem
leaf primordium
leaf veins
ligule
mesophyll
mesophytes
midvein (midrib)
netted venation
palisade parenchyma
parallel venation
petiole
seed leaves or cotyledons
sessile
shade leaves
sheath
simple leaves
soft fibers
spines
spongy parenchyma
stipules
stomate (stomata)
substomatal chamber
subsidiary cell
sun leaves
tendrils
transpiration
trichomes
vascular bundles
vegetative reproduction
xerophytes
Chapter 6
1. What are the 2 major functions of leaves?
2. Distinguish between simple and compound leaves, and describes common types of each.
3. How do you distinguish between a leaf and a leaflet?
4. What is a petiole and what are its functions?
5. What is a sheath? What types of plants typically have sheaths? What are auricles and ligules?
6. What are leaf veins? What types of venation patterns are typical in most plants? Distinguish/draw 2 major groups of
plants by their venation patterns.
7. Describe the types of cells that compose the epidermis. What is a stomate, how is it constructed, how does it work?
8. What is leaf mesophyll typically composed of, what is the function of various layers? Draw/label the interior of a leaf.
9. Describe/draw the structures making up the veins in a leaf. What is a bundle sheath?
10. Where do leaves have their origin? Describe/draw and label.
11. What are cotyledons? Distinguish between monocots and dicots. What types of plants are all monocots and dicots?
12. Describe a common type of heterophylly.
13. Describe/ draw variations in leaf adaptations, depending on the environment of the plant. Distinguish between
xerophytes, mesophytes and hydrophytes.