Question

the graph shows the relationship of photosynthesis with temperature.
graph: y - axis is increasing rate of photosynthesis, x - axis is temperature (°c) with values 5, 10, 15, 20, 25, 30, 35, 40, 45, 50; the curve peaks around the middle of the x - axis range
at what temperature is the rate of photosynthesis the highest?
○ 10°c
○ 15°c
○ 25°c
○ 35°c

Explanation:

Step1: Analyze the graph shape

The graph is a curve (parabola - like) with a peak. The peak represents the maximum rate of photosynthesis.

Step2: Identify the temperature at the peak

Looking at the x - axis (temperature) and the peak of the curve, the peak occurs at \(25^{\circ}C\) among the given options. The other options (\(10^{\circ}C\), \(15^{\circ}C\)) are on the rising part of the curve, and \(35^{\circ}C\) is on the falling part after the peak.

Answer:

\(25^{\circ}C\) (corresponding to the option: \(25^{\circ}C\))