The Law of Limiting Factors was proposed in which year?

The accumulation of food material in the assimilatory cells results in .........

The Law of Limiting Factors for photosynthesis was proposed by ........

What is the compensation point?

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

The figure shows the effect of light on the rate of photosynthesis. Based on the graph,answer the following questions:
$(a)$ In which region/s (indicated by arrows) is light a limiting factor?
$(b)$ What could be the limiting factor/s in the region where the rate of photosynthesis becomes constant?
$(c)$ What does the point where the curve flattens represent?