NEET Botany Photosynthesis Chapter Notes

Learning Objectives:-

The learner will be able to,
• Learn the Ultra structure of Chloroplast .
• Realise the importance of solar energy and properties of light.
• Acquire knowledge of Quantum, Quantum yield and Quantum requirement.
• Develop curiosity for photosynthetic experiments like Red drop, Emerson Enhancement effect and Hill’s Reaction.
• Analyse the pathway of electron- PS I and PS II.
• Recognise the Photo-Oxidative and Photo Chemical Pathway.
• Develop skill in Photosynthetic pathways and ability to draw C3, C4, C2 and CAM cycle.
Chapter Outline
13.1 Historical events in photosynthesis
13.2 Definition, Significance and Site of photosynthesis
13.3 Photosynthetic pigments
13.4 Spectrum of electromagnetic radiation
13.5 Photosynthetic unit
13.6 Absorption spectrum and Action spectrum
13.7 Emerson’s experiments & Hill’s reaction
13.8 Modern concept of photosynthesis
13.9 Photo-oxidation phase of light reaction
13.10 Photochemical phase of light reaction
13.11 Photophosphorylation
13.12 Chemiosmotic theory
13.13 Dark reaction or C3 cycle
13.14 Hatch & Slack Pathway or C4 Cycle
13.15 CAM cycle or Crassulacean Acid Metabolism
13.16 Photorespiration or C2 Cycle
13.17 Factors affecting photosynthesis
13.18 Photosynthesis in bacteria
Life on earth is made up of organic compounds. How do we get these organic compounds? Ultimately, plants are the main source of all kinds of carbon compounds in this planet. We directly or indirectly depend on plants for this. Plants are the major machinery which produce organic compounds like carbohydrates, lipids, proteins, nucleic acids and other biomolecules.
Though man has reached the glory of achievements still he is not able to imitate the metabolic activities of plants which produces energy resources and other



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