The substrate for photorespiration is ......... .

What induces photorespiration?

$C_4$ plants are more efficient in photosynthesis than $C_3$ plants due to

During photorespiration,where does the consumption of $O_2$ occur in the processes?

What is the 'Warburg effect' on photosynthesis?

Assertion : Under conditions of high light intensity and limited $CO_2$ supply,photorespiration has a useful role in protecting the plants from photo-oxidative damage.
Reason : If enough $CO_2$ is not available to utilize light energy for carboxylation to proceed,the excess energy may not cause damage to plants.