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The primary PHOTOSYNTHETIC ORGAN

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Page 1: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

The primary PHOTOSYNTHETIC ORGAN

Page 2: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

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

Page 3: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

FUNCTIONS of LEAVES

Page 4: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

FUNCTIONS of LEAVES

Page 5: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

FUNCTION of LEAVES

Page 6: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

FUNCTIONS of LEAVESTRANSPIRATION

DIFFUSION of WATER VAPOR out of leaves through STOMATA

GAS EXCHANGE TRANSPIRATIONAL

PULL COOLING

Page 7: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

PARTS of a LEAF

Page 8: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

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

Page 9: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

CLASSIFICATION of LEAVESVENATION

PARALLEL - monocotsNETTED - dicots

PINNATE PALMATE

Page 10: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

ANATOMY of LEAVESEPIDERMIS

CuticleTrichomesStomata Guard Cells

Page 11: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

ANATOMY of LEAVES

Page 12: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed
Page 13: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

LEAF ABSCISSIONLEAF DROP in DECIDUOUS plants

Page 14: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

LEAF ABSCISSION

Page 15: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

LEAF MODIFICATIONSSUPPORT

Thick Petioles

Captured Gas

Page 16: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

LEAF MODIFICATIONSWATER STORAGE

Succulents

Page 17: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

LEAF MODIFICATIONSFOOD STORAGE

Scales on Bulbs (right)Thick leaves (below)

Page 18: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

LEAF MODIFICATIONSCLIMBING

Tendrils (right)Leaf petioles

(below)

Page 19: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

LEAF MODIFICATIONSPROTECTION

Spines (right)Bracts (below)

Page 20: The primary PHOTOSYNTHETIC ORGAN. FUNCTIONS of LEAVES PHOTOSYNTHESIS Conversion of LIGHT ENERGY into SUGARS CARBON DIOXIDE (CO 2 ) and WATER (H 2 O) needed

LEAF MODIFICATIONSINGESTION

Carnivorous plants

Venus Fly Trap (above)

Sundew (left)


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