Leaves

1
Leaves
2
Leaf Structure
Margin
Blade
Veins
Petiole
Stem
3
Leaf Arrangement
Alternate
Opposite
4
Simple or Compound
Leaflets
Palmate Compound
Simple
5
Margin Types
Lobed
Entire
Toothed/ Serrate
6
Specialized Leaves
Onion
Bulb
Tendril
Needle
Spine
Reduce water loss
Protection
Store food
Support
7
Cuticle
U. epidermis
Palisade mesophyll
Bundle sheath
Vein/Vascular bundle
Xylem
Phloem
L. epidermis
Spongy mesophyll
Guard Cell
Stomata
8
Stomata
Control gas exchange
Transpiration
9
cuticle
Upper epidermis
Palisade layer
Lower epidermis
Guard cell
Stomata and air space
10
Functions

• Slow water loss
• Protect and slow water loss
• Major Photosynthesis
• Assist Photosynthesis
• Same as upper
• Control gas exchange/transpiration
• Gas exchange/transpiration

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Vocabulary

• Transpiration
• Sessile
• CO2 and H2O
• C6H12O6 and O2
• Trichomes
• Petiole
• Bract
• Succulents
• Carnivorous leaves

• Loss of water by leaves
• Leaves without petioles
• Raw materials of photosynthesis
• Products of photosynthesis
• Epidermal hairs that reduce water loss or deter
  animals excrete salt
• Part of leaf that positions it for maximum
  exposure to sunlight
• Leaves modified to look like flowers
• Plants with leaves for water storage
• Leaves used to capture prey