FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Prevents plant from wilting and Gives structure to plant
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Acts like body armour, for defence
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Shows social status of the plant
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All of the above
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Detailed explanation-1: -The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress. It also allows cells to develop turgor pressure, which is the pressure of the cell contents against the cell wall.
Detailed explanation-2: -The walls of plant cells must have sufficient tensile strength to withstand internal osmotic pressures of several times atmospheric pressure that result from the difference in solute concentration between the cell interior and external solutions. Plant cell walls vary from 0.1 to several µm in thickness.
Detailed explanation-3: -Answer: Functions of xylem: (i) To carry water and mineral salts upwards from the root to different parts of shoots. (ii) To provide mechanical support to the plant as the walls of tracheids, vessels, and fibres of xylem are lignified.