what definition of phloem
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Phloem Phloem. Definition. noun. A tissue in a vascular plant that functions primarily in transporting organic food materials (e.g. sucrose) from the photosynthetic organ (leaf) to all the parts of the plant.
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LEAF (leaves) 2. parenchyma-the primary tissue of higher plants composed of thin-walled cells that remain capable of cell division even when mature; constitutes the greater part of leaves, roots, the pulp of fruits, and the pith of stems. plant tissue-the tissue of a plant.arenchyma-the primary tissue of higher plants composed of thin-walled cells that remain capable of cell division even when mature; constitutes the greater part of leaves, roots, the pulp of fruits, and the pith of stems.
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- phloem noun [U]. › the ​type of ​plant ​tissue that ​transports ​food from the ​leaves to the other ​parts of the ​plant Compare xylem. Compare. xylem. (Definition of phloem from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press).
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Plant question: Please define xylem, phloem, dermal tissue, vascular tissue, and ground tissue.? mechanism of phloem translocation.[4] A high concentration of organic substance inside cells of the phloem at a source, such as a leaf, creates a diffusion gradient that draws water into the cells. Movement occurs by bulk flow; phloem sap moves from sugar sources to sugar sinks by means of turgor pressure gradient.he phloem is composed of still-living cells that transport sap.The sap is a water-based solution, but rich in sugars made by the photosynthetic areas.
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- meristem. n. 1. (Botany) a plant tissue responsible for growth, whose cells divide and differentiate to form the tissues and organs of the plant. Meristems occur within the stem (see cambium) and leaves and at the tips of stems and roots. [C19: from Greek meristos divided, from merizein to divide, from meris portion]. (ˈmɛr əˌstɛm).
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- Xylem and phloem are the two types of vascular tissues found in plants. Xylem tissues transport water from the roots throughout the plant, while phloem transports food (suga … rs) from photosysnthesis throughout the plant.hloem is also a tubular structure which, on the other hand, is responsible for the transportation of food and other nutrients needed by plant.     Xylem: Hard wall cells transport water and mineral nutrients in a kind of tissue called Xylem.
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Phloem Structure Phloem Structure Phloem is composed of several cell types including sclerenchyma, parenchyma, sieve elements and companion cells. The sieve element and companion cell are found closely associated with each other in what is referred to as the sieve element/companion cell complex.
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- Answer Wiki. Xylem and phloem are the vascular tissues of a plant. Xylem which is responsible for conduction of water and minerals is a type of complex permanent tissue. It is made up of vessels, tracheads, xylem parenchyma and fibers.
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xylem (zī'ləm) A tissue in vascular plants that carries water and dissolved minerals from the roots and provides support for softer tissues. Xylem consists of several different types of cells: fibers for support, parenchyma for storage, and tracheary elements for the transport of water. The tracheary elements are arranged as long tubes through which columns of water are raised. In a tree trunk, the innermost part of the wood is dead but structurally strong xylem, while the outer part consists of living xylem, and beyond it, layers of cambium and phloem.
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vascular tissue cambium-a formative one-cell layer of tissue between xylem and phloem in most vascular plants that is responsible for secondary growth. fibrovascular bundle, vascular bundle, vascular strand-a unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloem.. 1. (Botany) tissue of higher plants consisting mainly of xylem and phloem and occurring as a continuous system throughout the plant: it conducts water, mineral salts, and synthesized food substances and provides mechanical support.
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MADMAN BIOLOGY Basically, xylem tranports water and phloem transports organic substances. Xylem is a tissue found in vascular plants that transorts water and dissolved mineral nutrients. It consists of hollow vessels that are formed from cells joined end to end in flowering plants. Xylem tissue in plants transports water and mineral salts from the roots up to the leaves. It also provides strength to the plants thanks to a woody substance called lig … nin. Phloem in plants transports food (made in the leaves) to the rest of the plant.
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xylem (zī′ləm). xylem. Xylem cells in the stem carry water from a plant's roots to its leaves. The phloem distributes food that is made in the plant's leaves to other parts of the plant. The cambium cells divide into either xylem or phloem cells.The cortex and pith, seen in the stem cross section, provide structural support.zī′ləm). xylem. Xylem cells in the stem carry water from a plant's roots to its leaves. The phloem distributes food that is made in the plant's leaves to other parts of the plant. The cambium cells divide into either xylem or phloem cells.
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xylem noun. Xylem vessels in a leaf skeleton. Xylem vessels in a leaf skeleton. Xylem is a type of tissue in plants that carries water. An example of xylem is what moves water and some nutrients through a plant.
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xylem The tissue of vascular plants that conducts water and minerals, provides support, and consists of tracheary elements and parenchyma cells. Woody tissue is made of secondary xylem produced by the vascular cambium.
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MADMAN BIOLOGY   Xylem tissue in plants transports water and mineral salts from the roots up to the leaves. It also provides strength to the plants thanks to a woody substance called lig … nin. Phloem in plants transports food (made in the leaves) to the rest of the plant.ylem tissues transport water from the roots throughout the plant, while phloem transports food (suga … rs) from photosysnthesis throughout the plant. Xylem: tubes that brings water and minerals from the roots into the leaf.
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tissue tropism definition, tissue tropism meaning | English dictionary vascular tissue. n. 1. (Botany) tissue of higher plants consisting mainly of xylem and phloem and occurring as a continuous system throughout the plant: it conducts water, mineral salts, and synthesized food substances and provides mechanical support. Also called: conducting tissue. n.
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cambium cambium [′kam·be·əm] (botany) A layer of cells between the phloem and xylem of most vascular plants that is responsible for secondary growth and for generating new cells. cambium. cambium. The cellular layer of wood tissue between the bark and sapwood of a tree.
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Androgenesis, gynogenesis and the production of clones in fishes: A review Table 1 summarizes publications on the production of DH fish by gynogenesis (G) and androgenesis (A). The process involves two steps. First, the DNA of either the sperm (in gynogenesis) or egg (in androgenesis) is fragmented by gamma (γ) or UV-irradiation. The treated gamete then is fused with an untreated egg or sperm to form a haploid embryo.
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Phloem In an adult, the phloem originates, and grows outwards from, meristematic cells in the vascular cambium. Phloem is produced in phases. Primary phloem is laid down by the apical meristem and develops from the procambium. Secondary phloem is laid down by the vascular cambium to the inside of the established layer(s) of phloem.
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Botany Phloem carries the products of photosynthesis (sucrose and glucose) from the leaves to other parts of the plant. … The corresponding system that circulates water and minerals from the roots is called the xylem.
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Phloem Structure Phloem is the vascular tissue responsible for the transport of sugars from source tissues (ex. photosynthetic leaf cells) to sink tissues (ex. non-photosynthetic root cells or developing flowers).Other molecules such as proteins and mRNAs are also transported throughout the plant via phloem.hloem is the vascular tissue responsible for the transport of sugars from source tissues (ex. photosynthetic leaf cells) to sink tissues (ex. non-photosynthetic root cells or developing flowers).
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- Vascular tissue. vascular tissue. (botany) plant tissue that transports nutrients and water throughout a plant; as veins and arteries are to animals. The two kind of vascular tissue are xylem (used mainly for water) and phloem (used more for nutrients). Please contribute to this project, if you have more information about this term feel free to edit this page. This page was last modified on 25 January 2007, at 03:18.This page has been accessed 28,002 times. What links here | Related changes | Permanent link.
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- Xylem is a tubular structure which is responsible for water transport from the roots towards all of the parts of the plant. Phloem is also a tubular structure but is responsible for the transportation of food and other nutrients needed by plant. Xylem imports water and minerals while Phloem transports water and food.ylem is deeper inside the plant (near the trunk) and transports  water up to the leaves. Phloem is near the outside and transports  sugar and other materials all throughout … the plant.    Xylem has a one way flow, while phloem can go either  directions.
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xylem a plant tissue that conducts water and mineral salts from the roots to all other parts, provides mechanical support, and forms the wood of trees and shrubs. It is of two types (protoxylem and metaxylem), both of which are made up mainly of vessels and tracheids See also protoxylem, metaxylem.
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Representative members The living sieve elements that comprise the phloem are not lignified. Xylem and phloem are collectively called vascular tissue and form a central column (stele) through the plant axis. The ferns, gymnosperms, and flowering plants are all vascular plants.
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- About. Tyrone Hayes. The most popular use for atrazine is on corn. As corn is the largest crop in the United States [1] and atrazine is used on up to 85% of all corn crops, the amount of atrazine applied in the United States each year (up to 80 million pounds) is significant [2] .