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Yam is used in this set-up because it

Biology
JAMB 2004

Yam is used in this set-up because it

  • A. is a permeable to the salt solution
  • B. is a plant material
  • C. acts as a storage organ
  • D. acts as a semi-permeable membrane
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Correct Answer: Option D
Explanation

In an osmosis experiment, the yam tuber serves as a living semi-permeable membrane. Its cellular structure allows the selective movement of water molecules from a region of higher water potential (lower solute concentration) to a region of lower water potential (higher solute concentration), while blocking the passage of larger solute molecules like salt or sugar. 

There is an explanation video available below.


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Explanation Video

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