Download - Chithra photosynthesis 2
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Name : Chithra M LOption : Natural ScienceReg No : 18114341004
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TOPICPHOTOSYNTHESIS
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Plants use sunlight to turn water and carbon dioxide into glucose. Glucose is a kind of sugar. Plants use glucose as food for energy and as a building block for growing.Autotrophs make glucose and heterotrophs are consumers of it.
Photo-synthesisPhoto-synthesismeansmeans "putting together with light.""putting together with light."
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PHOTOSYNTHESIS
• Autotrophic Process: Plants and plant-like organisms make their energy (glucose) from sunlight.
• Stored as carbohydrate in their bodies.• 6CO2 + 6H2O + sunlight C6H12O6 + 6O2
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Photosynthesis
Carbon dioxide + water glucose + oxygensunlightsunlight
absorbed by chlorophyllabsorbed by chlorophyll
66COCO22 + + 66HH22O + energy O + energy C C66HH1212OO66 + + 66OO22
As can be seen from the equation for photosynthesis, the wood, bark, and root came from water and carbon dioxide.
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Why is Photosynthesis important?
Makes organic molecules (glucose) out of inorganic materials (carbon dioxide and water).It begins all food chains/webs. Thus all life is supported by this process.It also makes oxygen gas!!
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Plants in Action
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PlantsLeaves are green
because they contain
the pigment:
chlorophyllchlorophyll
Leaves have a Leaves have a large surface area large surface area to absorb as much to absorb as much light as possiblelight as possible "Thanks for the Glucose!""Thanks for the Glucose!"
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PHOTOSYNTHESIS• Absorbing Light Energy to make chemical
energy: glucose!• Pigments: Absorb different colors of white light
• Main pigment: Chlorophyll a• Accessory pigments: Chlorophyll b and Carotenoids• These pigments absorb all wavelengths (light) BUT
green!
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PHOTOSYNTHESIS• 2 Phases
• Light-dependent reaction• Light-independent reaction
• Light-dependent: converts light energy into chemical energy; produces ATP molecules to be used to fuel light-independent reaction
• Light-independent: uses ATP produced to make simple sugars.
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THANK YOU