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Plant nutrition is the study of the chemical elements and compounds necessary for plant growth and reproduction, plant metabolism and their external supply. In its absence the plant is unable to complete a normal life cycle, or that the element is part of some essential plant constituent or metabolite .
The oils included in this list are of this type. Oils may also be extracted from plants by dissolving parts of plants in water or another solvent. The solution may be separated from the plant material and concentrated, giving an extracted or leached oil. The mixture may also be separated by distilling the oil away from the plant material.
Dextrin [1] – an incompletely hydrolyzed starch made from a variety of grains or other starchy foods. Dextrose [1] – same as glucose, dextrose is an alternative name of glucose; Disaccharide – also known as double sugar, it is made when two monosaccharides (aka simple sugars) are joined together. Examples include sucrose, lactose, and ...
Nutrients in the soil are taken up by the plant through its roots, and in particular its root hairs.To be taken up by a plant, a nutrient element must be located near the root surface; however, the supply of nutrients in contact with the root is rapidly depleted within a distance of ca. 2 mm. [14] There are three basic mechanisms whereby nutrient ions dissolved in the soil solution are brought ...
Foods from plant sources. Plants as a food source are divided into seeds, fruits, vegetables, legumes, grains and nuts. [36] Where plants fall within these categories can vary, with botanically described fruits such as the tomato, squash, pepper and eggplant or seeds like peas commonly considered vegetables. [37]
For example, most plants are photolithoautotrophic, since they use light as an energy source, water as electron donor, and CO 2 as a carbon source. All animals and fungi are chemoorganoheterotrophic , since they use organic substances both as chemical energy sources and as electron/hydrogen donors and carbon sources.
By definition, phytochemicals include all nutritional and non-nutritional components of edible plants. [37] Included as nutritional constituents are provitamin A carotenoids, [38] whereas those without nutrient status are diverse polyphenols, flavonoids, resveratrol, and lignans that are present in numerous plant foods. [39]
Nectar is an economically important substance as it is the sugar source for honey. It is also useful in agriculture and horticulture because the adult stages of some predatory insects feed on nectar. For example, a number of predacious or parasitoid wasps (e.g., the social wasp species Apoica flavissima) rely on nectar as a primary food source ...