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The correct environment of air, mineral nutrients and water directs plant roots to grow in any direction to meet the plant's needs. Roots will shy or shrink away from dry [23] or other poor soil conditions. Gravitropism directs roots to grow downward at germination, the growth mechanism of plants that also causes the shoot to grow upward. [24]
A mandrake is the root of a plant, historically derived either from plants of the genus Mandragora (in the family Solanaceae) found in the Mediterranean region, or from other species, such as Bryonia alba (the English mandrake, in the family Cucurbitaceae) or the American mandrake (Podophyllum peltatum in the family Berberidaceae) which have similar properties.
The thick root hangs from the plant's base directly into air. The root is covered with a special, usually 4- to 5-cell layer thick, [12] spongy tissue (called Velamen), which helps the plant to absorb moisture from the atmosphere. Epiphytic orchid have another sort of root, called clinging roots, that help the orchid plant cling to the ...
Root vegetables are underground plant parts eaten by humans or animals as food. In agricultural and culinary terminology, the term applies to true roots such as taproots and tuberous roots as well as non-roots such as bulbs , corms , rhizomes , and stem tubers .
This plant has many uses in Native American medicine. The Zuni use an infusion of the root for body aches. The root is also chewed during curing ceremonies for various illnesses, and the crushed root and water used as wash and taken for sore throat. [22] The Rarámuri also use the root as herbal medicine. [20]
The most commonly eaten portion is the napiform or fusiform taproot, although the entire plant is edible and the tops can be used as a leaf vegetable. The seed can also be sprouted and eaten raw in a similar way to a mung bean. [31] The root of the radish is usually eaten raw, although tougher specimens can be steamed.
Although a perennial plant, cassava is extensively cultivated in tropical and subtropical regions as an annual crop for its edible starchy tuberous root. Cassava is predominantly consumed in boiled form, but substantial quantities are processed to extract cassava starch, called tapioca , which is used for food, animal feed, and industrial purposes.
Yellowroot is a common name for two plants native to Eastern North America. These plants contain the compound berberine, which gives the roots a yellow color, and have been employed in herbal medicine. Yellowroot may refer to: Hydrastis canadensis, also known as goldenseal; Xanthorhiza simplicissima