BI-718
Factors affecting photosynthesis
Biology · Secondary 3 · Hard · Factors affecting photosynthesis
A student investigates how temperature affects the rate of photosynthesis in pondweed. She measures the volume of oxygen produced in 5 minutes at different temperatures. At 25°C, the plant produces 8 cm³ of oxygen. At 35°C, it produces 16 cm³. Which conclusion about temperature and rate of photosynthesis is most appropriate?
- The rate halves when temperature increases from 25°C to 35°C.
- The rate doubles when temperature increases from 25°C to 35°C.
- Temperature has no effect on the rate of photosynthesis.
- The rate is highest at 25°C and decreases at 35°C.
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