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Encyclopaedia of Plant Analysis; 3 Volumes / Singh, Shashi Prakash
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Encyclopaedia of Plant Analysis; 3 Volumes
Singh, Shashi Prakash
 
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List Price : US$ 312.44
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  Book ID : 41063
  ISBN-10 : 93-5084-067-7 / 9350840677
  ISBN-13 : 978-93-5084-067-2 / 9789350840672
  Place of Publication : Delhi
  Year of Publication : 2013
  Edition : (First Edition)
  Language : English
  xii+296p., xii+297-584p., xii+585-896p., Illus., Bib., Index, 24 cm.
   
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 CONTENTS
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 DESCRIPTION
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The typical mature, vacuolate plant cell constitutes a tiny osmotic system, and this idea is central to any concept of cellular water dynamics. Although the cell walls of most living plant cells are quite freely permeable to water and solutes, the cytoplasmic layer that lines the cell wall is more permeable to some substances than to others. If a plant cell in a flaccid condition--one in which the cell sap exerts no pressure against the encompassing cytoplasm and cell wall--is immersed in pure water, inward osmosis of water into the cell sap ensues. This gain of water results in the exertion of a turgor pressure against the protoplasm, which in turn is transmitted to the cell wall. This pressure also prevails throughout the mass of solution within the cell. If the cell wall is elastic, some expansion in the volume of the cell occurs as a result of this pressure, although in many kinds of cells this is relatively small. If a turgid or partially turgid plant cell is immersed in a solution with a greater osmotic pressure than the cell sap, a gradual shrinkage in the volume of the cell ensues; the amount of shrinkage depends upon the kind of cell and its initial degree of turgidity. When the lower limit of cell wall elasticity is reached and there is continued loss of water from the cell sap, the protoplasmic layer begins to recede from the inner surface of the cell wall. Retreat of the protoplasm from the cell wall often continues until it has shrunk toward the center of the cell, the space between the protoplasm and the cell wall becoming occupied by the bathing solution. This phenomenon is called plasmolysis. This encyclopaedia explores the latest advances in the field of this subject. The subject matter, both as regards the arrangement of chapters as well as contents is designed to meet the requirement of the students in several Universities.

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