BIOL - The Origin of Food - Photosynthesis
Biology, IB | IGCSE | GCE | AP Biology
It enables through leaves. Photosynthesis is the process by which leaves absorb light and carbon dioxide to produce carbohydrate (food) for plants to grow. Leaves further adapted to carry out their function.
Function of leaf: Carry out photosynthesis.
Absorb sunlight to transfer energy into chemicals
Allow CO2 to diffuse into the leaf
Network of veins
To support the leaf and transport water and carbohydrates
Shortened distance for CO2 to diffuse into leaf cells
Large surface area
To absorb more light
Inside the Leaf:
*the internal structure sustains efficient photosynthesis*
Thin cuticle made of wax
To protect the leaf without blocking out the light
Air spaces allow CO2 to diffuse through the leaf, increasing the surface area
Thin and transparent Epidermis
To allow more light to reach the palisade cells
Palisade cell layer at top of the leaf
Absorb more light
Palisade cells containing many chloroplasts
To absorb all available light possible
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