If plants are given only visible light,their growth will:

The level of $CO_2$ available in the atmosphere is limiting for $........$ plants.

Maximum solar energy may be trapped 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?

What will be the effect when very high intensity of light is supplied to a photosynthesis system?

During $24$ hours,there is a specific time when plants neither release $O_2$ nor $CO_2$. This is the time of: