The Xylem is part of a plant‚ which is a hollow tube with spiral thickening of lignin around the wall giving strength‚ which is continuous throughout the whole plant. The difference between the Xylem cell and other cells is that the Xylem is dead and has no cytoplasm. The Xylem is responsible for transporting water and certain nutrients form root to plant. Phloem carries soluble organic material i.e. food for the plant. The top of the plant is in the light‚ conducting photosynthesis and helping the
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(k) Describe current theories about processes responsible for the movement of materials through plants in xylem and phloem tissue. Parts of Plants: Roots Structural support & transports by taking in water & nutrients‚ process of diffusion Root Hairs – Increase S/A‚ are extension of epidermal cells Stems in vascular tissue‚ which is made of xylem & phloem. Xylem – transports water & dissolved minerals Long tubes made up of series of cells. From roots upwards to leaves; useable for tree with
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Xylem and Phloem Research Task 3/8/2014 Xylem and phloem are the conducting elements of vascular plants. They function in the transport of water‚ nutrients‚ sugars‚ proteins and RNA throughout the plant. The xylem and phloem are generally found together in vascular bundles and can lie in various positions relative to each other. (Plant Vascular System Development) The term phloem originates from the Greek word‚ phloios‚ meaning “bark”. (Merriam-Webster) In vascular plants‚ phloem
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phloem and the xylem are complex tissues that perform the transportation of food and water in a plant‚ They are both vascular tissues of the plant that together form vascular bundles‚ they work together as a unit to make the transportation of food‚ nutrients‚ minerals and water effective. The xylem is a tubular shape that has no cross walls which allows a continuous column of water and minerals a more rapid transport within the xylem‚ there are two types protoxylem first formed xylem and metaxylem
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Comparison chart | |Phloem |Xylem | |Function: |Transportation of food and nutrients such as |Water and mineral transport from roots to aerial| | |sugar and amino acids from leaves to storage |parts of the plant. | | |organs and growing parts of plant. This movement|
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water through guttation which is the loss of liquids from the ends of vascular tissues at the margins of the leaves. It is imperative that this water lost is replaced; otherwise the plant will wilt and most likely die. Water from the roots in the xylem travels up from cell to cell and over long distances in the plant to replace lost water. This process is governed by the differences in water potential. More water potential means that there are more free water molecules available‚ and thus more
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separate transport systems. A network of xylem vessels transports water and mineral ions from the roots to all other parts of the plant. Phloem tubes transport food made in the leaves to all other parts of the plant. Neither of these systems has a pump‚ this is because they are not as active as animals and do not need such rapid supplies of food. Neither xylem nor phloem transports oxygen as oxygen gets to a plants cell by diffusion. Both stems and roots contain xylem vessels and phloem tubes. In a stem
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Syllabus topic: Cell structure Aim: To observe and draw transverse sections of parenchyma‚ collenchyma‚ sclerenchyma‚ xylem‚ phloem and epidermal cells using a light microscope. Apparatus and Materials: Light microscope; microscopic slide of dicotyledonous stem Method: 1. The light microscope was plugged into a power source‚ and switched on. 2. The coarse focus of the light microscope was adjusted with both hands to move the stage downwards. 3. The slide with the dicotyledonous stem
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provides additional support | Vascular bundle | contains xylem‚ phloem and cambium tissue | Xylem | a longitudinal set of tubes that conduct water from the roots upward through the stem to the leaves | Phloem (sieve elements) | transports sap through the plant tissue in a number of possible directions | Vascular cambium | is a type of lateral meristem that forms a vertical cylinder in the stem. The cambium produces the secondary xylem and phloem through cell division in the vertical plane |
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Chapter 37: Water and sugar transport in plants Water moves from areas of high water potential to areas of low water potential. Water’s potential energy in plants is a combination of (1) it’s tendency to move in response to differences in solute concentration and (2) the pressure exerted on it Plants do not expend energy to replace water that is lost to transpiration when stomata are open and photosynthesis is occurring. Instead‚ water moves from soil and roots to leaves long a water potential
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