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

Assertion : The atmospheric concentration of $CO_2$ at which photosynthesis just compensates for respiration is referred to as $CO_2$ compensation point.
Reason : The $CO_2$ compensation point is reached when the amount of $CO_2$ uptake is less than that generated through respiration because the level of $CO_2$ in the atmosphere is more than that required for achieving $CO_2$ compensation point.

How does light affect photosynthesis?

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

If the temperature increases beyond $35^{\circ}C$,what will happen?

State the saturation point of $C_3$ and $C_4$ plants with respect to the concentration of $CO_2$.