Potato in Salt Solution
Scenario
Plants in the soil have their root in a dilute solution of mineral ions. When they atomic number 18 suddenly flooded with seawater, concentration of which is 0.3 molar Sodium Chloride, they ar observed to wilt and become flaccid.
Aim
The aim of this experiment is to check out the apparent motion of water into and out of plant cells by osmosis. The cells elect for study testament be taken from potato tubers as they provide a ready supply of uniform material.
Background Information
Any bosom dissolved in water is called a solute; a answer is a liquid that is able to dissolve another substance, called a solute, to form a solution.
The water content of plants varies depending on environmental conditions. In land plants it plays a vital role in structural support and mineral transport and thus a lack of water may lead to wilting or possibly death.
Water is mainly absorbed by dint of the roots, which be cover in specially adapted root hair cells, with huge surface areas and thin cell walls to aid absorption by osmosis. The evaporation of water through stomata on plant leaves causes a transpiration stream, causing the water to be drawn up through xylem vessels.
Osmosis is the flow of water molecules by diffusion through a partially pervious membrane from areas of high water capableness (low solute concentrations) to regions of low water potential (high solute concentrations).
All plant cell membranes are partially permeable, which means they allow some some substances to get across them but not others.
Whether water enters the cell by osmosis will depend on the balance between external and inseparable solute and water potentials. If the solutions on each side of the partially permeable membrane are of equal water or solute potential, wherefore there will be no net movement of...
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