Where does water vapor form and accumulate in plants? In what process does free oxygen form in the plant’s body?

Where does water vapor form and accumulate in plants? In what process does free oxygen form in the plant’s body? How does the plant grow? How does the thickening of the root occur?

Water turns into steam due to the fact that it is necessary to get rid of excess of this substance and carry out thermoregulation. Free oxygen is formed during the light phase of photosynthesis. It is a by-product of the reaction. The main substance that is released during this stage of photosynthesis is ATP. Plant growth occurs due to active cell division during mitosis. Root growth occurs due to the active appearance of educational tissue. Conductive, storage, mechanical, and some other types of tissues develop from it.