Question

The rate of photosynthesis was recorded in 5 °C intervals. How could the experiment be improved to get a more precise value for the optimum temperature?

a) Increase the temperature intervals.
b) Repeat the experiment multiple ×.
c) Control other variables.
d) Use a more accurate measuring instrument.

Answer 1

To obtain a more precise value for the optimum temperature in an experiment recording the rate of photosynthesis, improvements can be made by increasing temperature intervals, controlling other variables, and using a more accurate measuring instrument.

Step-by-step explanation:

To obtain a more precise value for the optimum temperature in an experiment recording the rate of photosynthesis, there are several improvements that can be made:

1. Option a) Increase the temperature intervals. By reducing the interval to smaller increments, for example, 2°C or 1°C, you can better pinpoint the temperature at which the rate of photosynthesis is highest.
2. Option c) Control other variables. In addition to temperature, factors such as light intensity, CO2 concentration, and pH should be kept constant to eliminate their influence on photosynthesis and focus solely on temperature.
3. Option d) Use a more accurate measuring instrument. Utilizing a more precise instrument for measuring the rate of photosynthesis, such as a carbon dioxide gas analyzer or a spectrophotometer, can provide more accurate data.