22
Osmosis is controlled by the concentration of ............... molecules.
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Osmosis is controlled by the concentration of water molecules.
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ICSE Class 10 Biology · Competency Practice · 9 solved questions
23
An animal cell is kept in a lower solute concentration fluid. The cell will ............... . (Enlarge / Shrink)
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An animal cell is kept in a lower solute concentration fluid. The cell will enlarge .
24
Plants absorb water from the roots because the cell sap is ............... (more, less) concentrated than the surrounding fluids.
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Plants absorb water from the roots because the cell sap is more concentrated than the surrounding fluids.
25
Human red blood cells, when kept in a hypertonic solution, ............... occurs. (Osmosis, endosmosis, exosmosis)
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Human red blood cells, when kept in a hypertonic solution, exosmosis occurs.
26
Given below is an experimental setup. Read the information given below the diagram and answer the questions from 26-30.
Concentrated sugar solution is taken in the thistle funnel. The mouth of the thistle funnel is covered with cellophane paper. The thistle funnel is inverted in a beaker containing water.
The above experiment demonstrates ............... .
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The above experiment demonstrates osmosis .
27
After a few hours, the level of the sugar solution ............... in the thistle funnel.
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After a few hours, the level of the sugar solution increases in the thistle funnel.
28
It allows only ............... molecules to pass through it freely.
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It allows only water molecules to pass through it freely.
29
It prevents the passage of ............... molecules.
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It prevents the passage of sugar molecules.
30
A control experiment can be set up by taking plain ............... in the thistle funnel and placing it in another beaker containing water.
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A control experiment can be set up by taking plain water in the thistle funnel and placing it in another beaker containing water.
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