Intensity of light can be measured by

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 Law of Limiting Factors was proposed in which year?

If the rate of translocation of food is slow,what will be the effect on photosynthesis?

Which of the following is an effect of a herbicide?

In which of the following plants would metabolism be hindered if the leaves are coated with wax on their upper surface?