Leaves

1
Leaves
2
Leaf Structure

• Epidermal tissue system
• chloroplasts only in guard cells
• Ground tissue system
• mesophyll
• Vascular tissue system
• Leaf adaptations
• sun and shade leaves
• xerophytes

3
End of Show
4
Dicot leaf surface
Monocot leaf surface
5
(No Transcript)
6
Palisade parenchyma
Upper epidermis
Bundle sheath
Xylem
Phloem
Stoma
Trichome
Spongy parenchyma
Lower epidermis
7
Sun leaf and shade leaf sections
Genetic vs environmental differences in leaves
8
(No Transcript)
9
Xerophytes are plants that grow in dry conditions
10
What are the adaptations to dry conditions?
11
Leaf cross section
Which tissue holds the water?
12
Parallel venation (monocots)
Net or pinnate venation (dicots)
13
Typical horizontal leaf
Typical vertical leaf