A doctor will determine the underlying cause of dry mouth in the patient and then take steps to minimize the underlying cause, such as stopping a medication causing the dry mouth. For many individuals, however, little can be done to alter the underlying cause.
The carrot (Daucus carota subsp. sativus) is a root vegetable, usually orange in colour, though purple, red, white, and yellow varieties exist. It has a crisp texture when fresh. The most commonly eaten part of a carrot is a taproot, although the greens are sometimes eaten as well. It is a domesticated form of the wild carrot Daucus carota, native to Europe and southwestern Asia. The domestic carrot has been selectively bred for its greatly enlarged and more palatable, less woody-textured edible taproot.
A branch or stem can grow from the node to make a new plant. To recap, sweet potato is a root tuber, potato is a stem tuber. Stem tubers have apical bud, nodes and internodes, scaly leaves and auxiliary buds, and the ability to develop chlorophyll when exposed to sunlight. Root tubers do not have these attributes. Both are considered vegetables.