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 [...]
The following points highlight the two main types of photosynthetic pigments. The types are: 1. Chlorophylls 2. Carotenoids. Type # 1. Chlorophylls: They are the green photosynthetic pigments. Five types of chlorophylls occur in plants other than bacteria— a, b, c, d and e. Out of these only two chlorophylls occur in the chloroplasts of higher plants, a and b. [...]