the primary photosynthetic organ. functions of leaves photosynthesis conversion of light energy into...

The primary PHOTOSYNTHETIC ORGAN

FUNCTIONS of LEAVESPHOTOSYNTHESIS

Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO2) and WATER (H2O) needed

RESPIRATION (leaves, stems and roots)Breakdown of SUGAR into ENERGY

ENERGY is needed for GROWTH and to MANUFACTURE other compounds

OXYGEN (O2) needed

FUNCTIONS of LEAVES

FUNCTIONS of LEAVES

FUNCTION of LEAVES

FUNCTIONS of LEAVESTRANSPIRATION

DIFFUSION of WATER VAPOR out of leaves through STOMATA

GAS EXCHANGE TRANSPIRATIONAL

PULL COOLING

PARTS of a LEAF

CLASSIFICATION of LEAVESSIMPLE -one blade /petioleCOMPOUND – many leaflets/petiole –rachis

CLASSIFICATION of LEAVESVENATION

PARALLEL - monocotsNETTED - dicots

PINNATE PALMATE

ANATOMY of LEAVESEPIDERMIS

CuticleTrichomesStomata Guard Cells

ANATOMY of LEAVES

LEAF ABSCISSIONLEAF DROP in DECIDUOUS plants

LEAF ABSCISSION

LEAF MODIFICATIONSSUPPORT

Thick Petioles

Captured Gas

LEAF MODIFICATIONSWATER STORAGE

Succulents

LEAF MODIFICATIONSFOOD STORAGE

Scales on Bulbs (right)Thick leaves (below)

LEAF MODIFICATIONSCLIMBING

Tendrils (right)Leaf petioles

(below)

LEAF MODIFICATIONSPROTECTION

Spines (right)Bracts (below)

LEAF MODIFICATIONSINGESTION

Carnivorous plants

Venus Fly Trap (above)

Sundew (left)