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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 .
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 ...
In terms of food (rather than botany), fruits are the sweet-tasting seed-bearing parts of plants, or occasionally sweet parts of plants which do not bear seeds. These include apples , oranges , grapes , bananas , etc. Fruits are low in calories and fat and are a source of natural sugars , fiber and vitamins.
A nutrient is a substance used by an organism to survive, grow and reproduce. The requirement for dietary nutrient intake applies to animals, plants, fungi and protists. Nutrients can be incorporated into cells for metabolic purposes or excreted by cells to create non-cellular structures such as hair, scales, feathers, or exoskeletons.
Plants, algae, and some microorganisms use photosynthesis to make some of their own nutrients. [5] Water is found in many foods and has been defined as a food by itself. [ 6 ] Water and fiber have low energy densities, or calories , while fat is the most energy-dense component. [ 3 ]
Loma Linda University School of Public Health, Department of Nutrition developed The Vegetarian Food Pyramid [2] in 1997 for presentation at the 3rd International Congress on Vegetarian Nutrition. [3] The five major plant-based food groups (whole grains, legumes, vegetables, fruits, nuts and seeds) form the trapezoid-shaped lower portion of the ...
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Organisms are able to detect nutrients through taste or other forms of nutrient sensing, allowing them to regulate nutrient intake. [16] Optimal foraging theory is a model that explains foraging behavior as a cost–benefit analysis in which an animal must maximize the gain of nutrients while minimizing the amount of time and energy spent foraging.
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