Topic 9: Plant Science 9.1 Plant Structure and Growth 9.1.1 Draw and label plan diagrams to show the distribution of tissues in the stem and leaf of a dicotyledonous plant. Cross-section of a stem Part of plant | Purpose | Epidermis | Surface of the stem made of a number of layers often with a waxy cuticle to reduce water loss | Cortex Tissue | Forming a cylinder of tissue around the outer edge of the stem. Often contains cells with secondary thickening in the cell walls which provides
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Plant Structure and Function Plant Body The unique organization of tissues in flowering plants is part of the reason why they are the dominant group of the plant kingdom. Monocots and Dicots Meristems Meristems – region of undifferentiated cells that can divide rapidly. Apical meristems – shoots and tip of roots (primary growth) Lateral meristems – thickening of the cambium (secondary growth) Plant Tissues Plant Tissues Xylem – conducts water and mineral ions; fluids can
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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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There are many factors that stress out plants and trees around our area. Because we are located in an urban setting‚ these plants and trees are more vulnerable to such stress. During our walk around campus‚ I noticed an enormous amount of stress done to the plants and trees. In this essay‚ I will explain my observations of urban stress around Temple University ’s campus and how each factor plays an important role and how it influences the survival of each plant and tree. Heat stress was a major
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ANTITERMITICPROPERTYOF PLANT EXTRACT Artemisia vulgaris Linn.(Damong Maria) AND Manikarazapota Linn. (Chico) Daño Manuel Victor A. ErmoginoAlgen F. Southern Luzon State University College of Arts and Sciences B. S. Biology March 2013 Chapter I INTRODUCTION Coptotermesvastator or Philippine milk termitesare social insectsthat raise their young as a group of workers‚ soldiers and reproductive queen and king. They cause significant losses to annual and perennial
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http://newmetode.Sharestiforp.com Plant tissue culture is a collection of techniques used to maintain or grow plant cells‚ tissues or organs under sterile conditions on a nutrient culture medium of known composition. Plant tissue culture is widely used to produce clones of a plant in a method known as micropropagation. Different techniques in plant tissue culture may offer certain advantages over traditional methods of propagation‚ including: • The production of exact copies of plants that produce particularly
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Chapter 35 Plant Structure‚ Growth‚ and Development Lecture Outline Overview: Plastic Plants? • The fanwort‚ an aquatic weed‚ demonstrates the great developmental plasticity that is characteristic of plants. o The fanwort has feathery underwater leaves and large‚ flat‚ floating surface leaves. o Both leaf types have genetically identical cells‚ but the dissimilar environments in which they develop cause different genes involved in leaf formation to be turned on or off.
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questions- 1.Bring out four differences between guttation and transpiration ? 2.Why is abscisic acid called as stress hormone ? 3.What is water potential ? Name the factors that influence it. 4.How is cyclic photophosphorylation different from non-cyclic photophosphorylation ? 5. Where in the roots apoplast pathway of water takes place ? Why? 6.Define respiratory quotient. 7. What is meant by turgor pressure ? What is its importance in plants ? 3 marks questions- 8.Why does excess of manganese
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Plant tissue culture is a widely used procedure in plant biology in which organism is planted from the explants of the living plants in a nutrient medium under aseptic conditions. There are both advantages and disadvantages of plant tissue culture. Advantages: 1. To produce many copies of the same plants then which may be used to produce plants with better flowers‚ odors‚ fruits or any other properties of the plants that are beneficial to the human beings. 2. To produce plants anytime we want
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gravity on plant growth By: Michael Henry Analysis and Conclusion Part.A Day | Change in degree | 1 | 0° | 2 | 63° | 3 | 71° | 4 | 71° | 5 | 78° | Part.B Day | Box with Hole | Box with no Hole | 1 | The plant grew 4.5 inches normally | The plant grew 1.5 inches bit in a rolled/wavy way | 2 | There was a new plant 5 inches tall
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