If a plant’s stomata are closed and no transpiration is occurring, it means to say that

photosynthesis will not occur because it is dark.

Explanation: during photosynthesis, the CO2 naeeded is obtained through an open plant stomata. At night, when there is no sunlight, and photosynthesis is not occurring, the stomata closes. The closure prevents water from escaping through open pores of the plant.

There more water

Explanation:

Plants stomata are pores in the leaves of plant that allows passing out of water in form of gas and taking in of carbondioxide. Transpiration is the water movement process whereby plant takes up water from the soil and then gives out water to the atmosphere through evaporation via the stomata which help guide the rate at which transpiration occurs. Water is needed is small proportion in plant therefore when there is excess water than required stomata closes and complete transpiration process stops too