Join date: Dec 28, 2021

Cacti have the basic frameworks as well as processes of plants. The work done by fallen leaves in most various other plants goes on in the stems and branches of cacti. And in the hot, dry areas where cacti are among the few eco-friendly plants, their spine-covered branches and stems as well as their lack of leaves have allowed them to survive. The distant forefathers of the cactus expanded and also had leaves like the much more familiar plants these days. Throughout millions of years the earth's environment changed. Those parts of the Americas where the cactus forefathers grew became hotter and also drier. Gradually these regions developed into desert or near desert. All this time around the cactus forefathers were adjusting to the changing problems. As the climate came to be drier the roots of cacti slowly spread out, closer to the surface area of the ground. That is why cacti promptly soak up water from the earth after a rains. The water taken in via the origins is saved in the squishy or hollow stems of a cactus. The external layer of the plant is thick as well as waxy, protecting against the escape of water. The external skin is also ribbed. Some lophophora williamsii have ribs that fold up and also increase like an accordion, depending upon how much water is had within the stem. Most cacti are leafless, they bring on the regular cell-making activities of plants. The leaves of other plants are thin structures which contain numerous breathing pores; during the cell-making process, water is produced to the air with these pores. But in cacti the stems and branches have actually taken over the job of the leaves. The thick skins have few pores, as well as the water is maintained.