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Leaves (Morphology and Anatomy of Other Leaf Types (Insect Traps…
Leaves
Morphology and Anatomy of Other Leaf Types
Spines
Axillary buds
flexible blade useless for protection
Tendrils
Capable of sensing contact
coil for support
Bud Scales
Small, rarely compound
Protection
Leaves of Conifers
Always simple
Perennial
Leaves with Kranz Anatomy
C4 photosynthesis
Adapts C4 plants to environment
Sclerophyllous Foliage Leaves
Produce more sugars
resistant towards animals, fungi, bacteria
Insect Traps
trichomes
trap and digest insects
Succulent Leaves
Water retention
Desert habitats
External Structure of Foliage Leaves
Keep out bacteria, fungi, or epifoliar algae
Leaf blade- lamina
Maintain amount of water
Dorsal surface is the backbone
Photosynthesis
Simple or compound
Leaf base and APex
Internal Structure of Foliage Leaves
Mesophyll
Ground tissue interior to epidermis
Palisade and spongy
Vascular Tissues
Xylem and Phloem
bundle sheaths
Palisade parenchyma and spongy mesophyll
Epidermis
Outermost layer
Waterproof but simultaneously translucent
Air trapped on the underside of leaf
Hairy
Coated in cutin
Petiole
Transition between stem and the lamina
Similar to cortex
Initiation and Development of Leaves
Basal Angiosperms and Eudicots
Provascular tissue
Apical meristem
Monocots
Apical meristemm
Shoot apex, primordorium
