The Leaf LEAVES: Function: Photosynthesis (food production for - - PowerPoint PPT Presentation

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The Leaf LEAVES: Function: Photosynthesis (food production for - - PowerPoint PPT Presentation

Jan 31, 2023 288 likes •560 views

The Leaf LEAVES: Function: Photosynthesis (food production for the whole plant). Transpiration Blade: Flat expanded area Petiole: stalk that connects leaf blade to stem, and transports materials Simple Leaf Compound Leaf

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The Leaf

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LEAVES:

 Function: Photosynthesis

(food production for the whole plant).

 Transpiration  Blade: Flat expanded area  Petiole: stalk that connects

leaf blade to stem, and transports materials

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Simple Leaf Compound Leaf

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The Leaf Arrangement

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Typical Dicot Leaf

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Modified leaves

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Modified leaves

Dune grass leaf with highly developed sclerenchyma

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Modified leaves

Water lily leaf with highly developed spongy parenchyma

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The leaves have been completely modified into a cactuses thorns.

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Maple leaves American Beech leaves Sassafras leaves

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Northern Red oak White Oak Pignut hickory Flowering Dogwood

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Photosynthesis

  • 1. Definition

PHOTO = produced by light SYNTHESIS = manufacturing. PHOTOSYNTHESIS is the process whereby plants, algae and some bacteria, use the energy of the sun to synthesize organic compounds (sugars) from inorganic compounds (CO2 and water).

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  • 2. General Equation of

Photosynthesis.

CO2 + H2O+Light C6H12O6 + O2 + H2O

pigments, enzymes

Carbon Dioxide + Water+ Light Glucose + O2

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  • 3. Where?
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Chlorophyll a is the primary photosynthetic pigment that drives photosynthesis. Accessory pigments absorb at different wavelengths, extending the range of light useful for photosynthesis.

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WHY IS PHOTOSYNTHESIS SO IMPORTANT?

  • PHOTOSYNTHESIS is one of the most

important biological process on earth!

  • Provides the oxygen we breathe
  • Consumes much of the CO2
  • Food
  • Energy
  • Fibers and materials