The following points highlight the four main raw materials used in photosynthesis. The types are: 1. Carbon Dioxide 2. Water 3. Light 4. Chloroplasts. Raw Material: Type # 1. Carbon Dioxide: In land plants, carbon dioxide is obtained from the atmosphere through the stomata. Small quantities of carbonates are also absorbed from the soil through the roots. Hydrophytes get their [...]
The following points highlight the fourteen main external and internal factors influencing photosynthesis. The factors are: 1. Carbon Dioxide 2. Light Intensity 3. Quality of Light 4. Duration of Light 5. Temperature 6. Oxygen 7. Water 8. Air Pollutants 9. Minerals 10. Age 11. Chlorophyll 12. Hormones 13. Leaf Anatomy 14. Accumulation of End Products. External Factors (Environmental Factors): Factor [...]
In this article we will discuss about the History and Phases of Calvin Cycle. History of Calvin Cycle: The cycle was discovered by Calvin, Benson and their colleagues in California, U.S.A. They fed Chlorella and Scenedesmus with radioactive 14C in carbon dioxide. Radioactive carbon, 14C has a half life of 5568 years. Therefore, the path of CO2 fixation can be [...]