The law of limiting factors was proposed with particular reference to photosynthesis. Identify the scientist who proposed this law.

The graph given below shows the effect of potassium cyanide on the rate of photosynthesis of Chlorella at different light intensities. Which one of the following can be deduced from the graph?

If half of the leaves of a plant are removed,the rate of photosynthesis would be

During $24$ hours,there is a specific time when plants neither release $O_2$ nor $CO_2$. This is the time of:

The optimum temperature for photosynthesis is ......... .

Who proposed the Law of Limiting Factors?