Carbon dioxide+Water→Glucose+Oxygen
Camera & tracking
No object trackedTap scene
Live leaf data
Photosynthesis rate0.0 units/min
Limiting factor—
Oxygen produced0.0 units
Glucose stored0.0 units
RateOxygen outputWhole leaf history
Learning outcomes
- Identify the inputs and outputs of photosynthesis.
- Explain how light energy becomes stored chemical energy.
- Predict how limiting factors affect photosynthesis rate.
- Distinguish matter flow from energy flow through a leaf.
Key concept: Photosynthesis slows when any required factor is scarce. Raising a factor that is not limiting may have little effect.
Suggested experiments
- Set light to maximum, then slowly lower carbon dioxide. Watch which factor becomes limiting.
- Keep light and carbon dioxide high, then compare 25°C with 45°C.
- Choose Drought and watch water molecules and oxygen output.
Questions for exploration
- Why does the rate level off even when light keeps increasing?
- Where do the carbon atoms in glucose come from?
- Why does very high temperature reduce the rate?