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

$DCMU$ is a herbicide which kills the plant by

Compensation point is

In an experiment demonstrating the evolution of oxygen in $Hydrilla$,sodium bicarbonate is added to water in the experimental set-up. What would happen if all other conditions are favourable?

The value of $Q_{10}$ for photosynthesis is

$A$ plant is kept in $300 \, ppm$ $CO_2$ concentration. What will happen to it?