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Which one does not involve osmosis ?
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Osmosis is the flow of water from high to low concentrations when the concentration gradient is present.
When water moves upwards through xylem elements then it does not involve osmosis. In this case, water moves through transpiration pull and root pressure by active and passive absorption of water.
So the correct answer is 'Water passing from one xylem element to the other above it'.
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Question 1
An experiment was conducted to determine the effect of concentration on the rate of diffusion. A student filled six dialysis bags with different concentrations of salt solutions and placed each of them in a separate beaker of distilled water.Dialysis bags model the selective permeability of cell membranes and allow small molecules, ions and water to pass through according to the surrounding concentration gradient. A conductivity probe was used to measure the change in concentration of ions in the beaker over time.
Which curve on the graph below accurately predicts the rate of diffusion as a function of salinity?
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| Question Text | Which one does not involve osmosis ? |
| Answer Type | Text solution:1 |
| Upvotes | 150 |
