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Leaves 71UuxahLvnL - Coggle Diagram
Leaves
External Structure of Foliage leaves
Photosynthesis
Water proof pathogen resistant
Allows fungi, bacteria or algae entry
CO2 converts into carbohydrates
Internal structure of Foliage leaves
Epidermis
Flat and thin
Transpiration
Allows CO2 entry
Translucent
Mesophyll
Palisade Parenchyma
CO2 dissolves cytoplasm slowly
Spongy Mesophyll
Palisade slightly saperated
Vascular tissue
Water moves by capillary action
Eudicot leaf contain one mid vein
location: between palisade parenchyma& spongy mesophyll
Petiole
Tiny
few stomata & trichyme
more vascular bundle
Initiation & development of leaves
Monocot
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Expansion of apical meristem cell
Tubular grows upward
Hood-like shape
Form leaf primordium
Basal Angiosperm & Eudicots
contains leaf protoderm & leaf ground meristem
Leaf peimordium
Meristematic cell
Morphology & Anatomy of other leaf type
Succulent leaves
Desert habitat
Families: Crassulacae, Brtulacacae, Aizoaceae
Cylindrical and spherical shape
Mesophyll contain few air space
Sclerophyllous Foliage leaves
More sugar produces
Soft, flexible edible
present below epidermis
Thick cuticle
Leaves of conifer
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Thick cuticle
long leaf 40cm long
Needle 10 com long
Perennial
Larches, bald cypress, dawn vedwood
bud Scale
Small and rarely compund
Tougher and waxier
common modification of leaves
Spinner
Cacti Two types
Moist cactus body
Cluster of spines
Tendrils
Modified leaves
grows indefinietly
example; peas cucumber
detrimental lamina
Leaves with Kranz Anatomy
C4 photosynthesis
prominent bundle sheath
Carbon dioxide mechanism
Insects Traps
Traps and digest insects
Simple &compound leaf
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