Photosynthesis Quiz
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5 questions, one answer each
Each answer is checked as you go, with why.
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1. Type of reaction is photosynthesis?
- A. Exothermic
- B. Endothermic
- C. Neutral
- D. Exothermic taking in energy
2. Which is a limiting factor of photosynthesis?
- A. Soil pH
- B. Carbon dioxide concentration
- C. Leaf colour
- D. Water pH
3. Why keep temperature constant in the light intensity practical?
- A. Isolates light intensity's effect on rate
- B. Temperature has no effect
- C. Increases bubbles regardless of light
- D. CO2 depends on temperature only
4. Lamp moved 10cm to 20cm. Effect on intensity?
- A. Halves
- B. Stays same
- C. Falls to a quarter
- D. Doubles
5. Grower raises CO2 and temp but sees little rate increase on a cloudy day. Why?
- A. Water is now limiting
- B. Light intensity has become limiting
- C. Glucose too high
- D. Oxygen too low