Unlike animals, plants are immobile, anchored to the ground, and their cells have rigid walls.
They can be propagated from a fragment of one of their organs (stems, leaves, roots etc.), e.g. through cutting or layering, and their growth is indefinite.
Plants support animal life. Without plants, animals could not live.
For this process, during the dayplants absorb carbon dioxide (CO2), synthesize energy storage molecules (sugars) and release oxygen (O2) back into the atmosphere. They thus serve to replenish the atmospheric oxygen that living things consume.
At night, on the other hand, the plant does the opposite, since photosynthesis can only happen during the day: it absorbs O2 and gives off CO2, which is why it is recommended to keep plants out of the bedroom at night.