mineral salts are taken up due to diffusion because of the concentration gradient between the mineral ions in sap and those in soil solution
active transport involves energy in form of ATP due to respiration which forces mineral salts through a plant against a concentration gradient
water moves by osmosis through a semi-permeable membrane of root hairs and between cells of stem
in stem water moves by cohesion(attraction of water molecules to each other) it also moves by adhesion(attraction of water molecules to walls) capillarity is due to narrowness of xylem vessels
transpiration pull occurs when water vapour evaporates from sub-stomatal chambers into the air
root pressure is a force that pushes water up the stem from the roots and causes guttation /exudation
simiyu kelly answered the question on September 18, 2017 at 11:51
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September 18, 2017
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Discuss factors that affect the process active transport in living organisms.
Date posted:
September 15, 2017
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Discuss factors that affect the rates of diffusion in living organisms.
Date posted:
September 15, 2017
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Date posted:
September 15, 2017
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Date posted:
September 15, 2017
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September 15, 2017
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September 15, 2017
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September 15, 2017
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September 13, 2017
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September 13, 2017
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September 5, 2017
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(Solved)
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Date posted:
May 26, 2017
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Answers (1)
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(Solved)
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Date posted:
May 26, 2017
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Answers (1)