PHOTOSYNTHESIS.pptx photo HOTOSYNTHESI fsS

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1. PHOTOSYNTHESIS HARVESTING LIGHT TO KEEP YOU ALIVE! Manjeet Singh

2. Hunger needs of all the animals and humans are fulfilled by food they eat, which mostly is derived from plants. But, what about plants how do they nourish themselves? Before nourishing Others…………

3. Here is where…. PHOTOSYNTHESIS

4. Definition * Photosynthesis is a Phyico - c hemical process by which plants use light energy to derive the synthesis of organic compounds.

5. Historical scientific observation which lead to discovery of photosynthesis: Hypothised that plants restore to the air whatever breathing animals and burning candles remove i.e.CO2 is fixed and O2 is given by the plants through photosytasis . Joseph Priestly

6. JAN INGENHOUSE: Hedemonstrated that sunlight purifies air fouled by burning candle . i.e. Photoynthesis occur in the presence of sand breathing animalun light Demontrated that green plants consume CO2 and release O2. JEAN SENE BIER:

7. JULIUS VON SACHS: T.W. ENGLMANN: CORNELIUS VAN NEIL: Provide evidense for production of glucose when plants grow. He invented that blue and red light of the split spectrum are region where max photosynthesis occur. Discover the key chemical process reaction and inf -erred that 02is evolved by green plants come from H20 not from CO2.

8. Photosynthesis Factory *Chloroplasts are the photosynthesis factory,in which Machinery are Thylakoids (stacked in the form of grana )and Stroma Lamellae joining different lamella, and Raw Marerials are Chlorophyll,Light and CO2.

9. Chlorophyll A is chief pigment because it absorbs maximum light and other three are accesory pigments they help in harvesting light Chlorophyll A Chlorophyll A is also called reaction center Pigments involved in Photosynthesis Chlorophyll A Chlorophyll B Carotene Xanthophyll

10. ❶Electron transport system. ❷Splitting of water. ❸Cyclic and non-cyclic phosphorylation . ❹ Chemiosmotic hypothesis. ❺Calvin cycle{C3,C4 Cycle} ❻Etc. # photosynthesis involves various complex cycles and proceses , which are: Mechanism of photosynthesis

11. Factors effecting photosynthesis

12. Photosynthesis takes place  inside  plant  cells in small objects called chloroplasts . ...  Plants  get carbon dioxide from the air through their leaves, and water from the ground through their roots. Light energy comes from the Sun. The oxygen produced is released into the air from the leaves. Why does photosynthesis occur in plants

13. Photosynthesis

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