Question

When the amount of CO2 uptake during photosysthesis is equal to the amount
of CO2 generated through respiration, it is called ...............

Answer 1

Explanation:

sorry I don't know the name of this process but I know this is done at compensation point.

Answer 2

The amount of $\bold{\mathrm{C} \mathrm{O}_{2}}$ uptake during photosynthesis is equal to the amount of $\bold{\mathrm{C} \mathrm{O}_{2}}$ generated through ‘respiration’, it is called Compensation point.

Explanation:  

Plants respire to give up carbon dioxide by using oxygen. It takes place at maximum intensity in the ‘absence of sunlight’.  

Similarly during the day the ‘rate of photosynthesis’ is highest when carbon dioxide is absorbed to give out oxygen.  

At ‘compensation point’ the rates of the two above processes are just equal.  

Hence the amount of gases absorbed or released by one process is just equal to the amount given or used by the other process. Hence there is no gaseous exchange.