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![Page 1: What is visible light? Electromagnetic radiation of a wavelength that irritates the nervous receptors in the eyes. ROY G BIV Primary colors of visible.](https://reader036.fdocuments.in/reader036/viewer/2022062309/56649e5f5503460f94b593ee/html5/thumbnails/1.jpg)
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What is visible light?
Electromagnetic radiation of a wavelength that irritates the nervous receptors in the eyes.
ROY G BIVPrimary colors of visible light
Composed of particles of energy called: Photons or Quanta
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![Page 4: What is visible light? Electromagnetic radiation of a wavelength that irritates the nervous receptors in the eyes. ROY G BIV Primary colors of visible.](https://reader036.fdocuments.in/reader036/viewer/2022062309/56649e5f5503460f94b593ee/html5/thumbnails/4.jpg)
Once a photon of light strikes an object two things happen:
1. Some of the energy is absorbed.
2. Some of the energy is reflected.
The absorbed energy is converted to heat or another type of energy
The reflected energy is the color that we see when looking at the object.
PHOTON
Energy Absorbed
Energy Reflected
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Reactions of Photosynthesis
Light Reactions
Photolysis - Non-cyclic Pathway [ H+, e-, O2 ]
Photophosphorylation Non-cyclic and Cyclic Pathways [ ADP + P -> ATP ]
Dark Reactions
Calvin – Benson Cycle
Carbon Fixation - Reduction of CO2 to C6 H12 O6
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C4 Plants
C4: Orange C3 : Yellow Forest : Green
4 % of Plants are C4 18% of Crops are C4
Evolved from C3 about 25 Million years ago
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Crassulacean Acid Metabolism (CAM)
succulent plants, Cacti, Pineapple
C4 Plants :
sugar cane and corn
crabgrass
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Structure of a Leaf
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In C3 plants the Bundle Sheath has no Chloroplasts but in C4 plants they do.
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C4 and CAM
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