Photosynthesis is the process that plants use to create glucose.
Carbon dioxide + water ➡️ (energy from light) glucose + oxygen
- The glucose made during photosynthesis is used by the plant for respiration. This happens all the time, but photosynthesis only happens in the light.
Adaptions for photosynthesis:
- Leaves have a large surface area to absorb more sunlight
- Stomata allow carbon dioxide to diffuse into the leaf
- Also allow oxygen and water produced to diffuse out of the leaf
- Low temperature, dim light and low carbon dioxide levels all limit the rate of photosynthesis.
- We can measure these by measuring the rate pondweed gives off oxygen.
This can test the effect of:
- Temperature, using hot and cold water baths
- Light intensity using bright and dim lights
- CO2 concentration by adding different amounts of sodium hydrogen carbonate to the water
And we're done with this topic! Well Done!
Drafted by Alyssa (Biology)
- "Photosynthesis", https://gosciencegirls.com/wp-content/uploads/2021/05/PHOTOSYNTHESIS.jpg
- "Adaptions for photosynthesis". Photo from the internet.
- "Pin on Biology", https://i.pinimg.com/originals/90/08/a7/9008a7fbad99c927e44397fc283fa6ff.jpg
- "Limiting factors in photosynthesis", https://i.ytimg.com/vi/eFhQ32uQFiI/maxresdefault.jpg?v=5fa54c1a