HORTICULTURE SCIENCE
ULTRA STRUCTURE OF PLANT CELLS AND ORGANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a tissue
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an organ
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an organ system.
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an organism.
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Detailed explanation-1: -In simple terms, xylem is a type of vascular tissue responsible for conducting water throughout the plant body. Xylem comprises complex systems and several types of cells for transporting water and dissolved minerals to support and provide nutrition to plants.
Detailed explanation-2: -As transpiration occurs, it deepens the meniscus of water in the leaf, creating negative pressure (also called tension or suction). The tension created by transpiration “pulls” water in the plant xylem, drawing the water upward in much the same way that you draw water upward when you suck on a straw.
Detailed explanation-3: -Key Term: Cohesion–Adhesion or Cohesion–Tension Theory of Water Movement. The cohesion–adhesion theory, sometimes also called cohesion–tension theory, describes the two forces in the xylem vessels that help transport water upward against gravity, from the roots to the leaves.