GCSE Biology - Factors Affecting the Rate of Photosynthesis | Limiting Factor Graphs

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*** WHAT'S COVERED ***
1. Factors affecting the rate of photosynthesis.
* Light intensity.
* Temperature.
* Carbon dioxide concentration.
* Amount of chlorophyll.
2. The role of chlorophyll in photosynthesis.
* Factors affecting chlorophyll levels (disease, environment, nutrients).
3. Limiting factors for photosynthesis.
* How light intensity, carbon dioxide, and temperature limit the rate.
* Graphical representation of limiting factors.
* Explanation of graph shapes (initial increase, plateau, denaturation).
4. Interaction between limiting factors shown on graphs.
5. Artificially creating optimal conditions for photosynthesis.
* Use of greenhouses, artificial light, CO2 enrichment, and paraffin heaters.
* Use of fertilisers and pesticides.
* Economic considerations for farmers.

*** CHAPTERS ***
0:00 Introduction: Factors Affecting Photosynthesis
0:35 Role of Chlorophyll
1:18 Limiting Factors and Graphs
1:35 Graph: Effect of Light Intensity
2:01 Graph: Effect of Carbon Dioxide
2:20 Graph: Effect of Temperature
2:46 Graphs: Interacting Limiting Factors
4:43 Economic Factors for Farmers

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