Photosynthesis

• Where in the plant cell does photosynthesis take place?

  Chloroplasts
• What is an endothermic reaction?

  An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature.
• What is the word equation for photosynthesis?


  Carbon dioxide + water + sunlight -> glucose + oxygen
• Why do plants store glucose as starch?

  To provide energy for growth and development.
• What is meant by a ‘limiting factor‘ of photosynthesis?

  Any factor that restricts or limits the rate of photosynthesis, such as light intensity, temperature, or availability of carbon dioxide.
• What effect would a low carbon dioxide concentration have on the rate of photosynthesis?

  Decrease rate of photosynthesis
• Describe how you would measure the effect of light intensity on the rate of photosynthesis:

  Measure the rate of photosynthesis at different light intensities using a lamp and pondweed. count bubbles
• In the inverse square law, how are light intensity and distance linked?

  Inversly proportional. This is because as the distance away from a light source increases, photons of light become spread over a wider area