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Question
The osmotic potential and pressure potential of three cells (A, B, C) located in different parts of an actively transpiring plant are given below:
Cell Osmotic Potential (MPa) Pressure Potential (MPa) A – 0.87 0.44 B – 0.92 0.34 C – 0.68 0.27
Identify these three cells as root hair, root cortical and leaf mesophyll cells respectively. The correct answer is.
The osmotic potential and pressure potential of three cells (A, B, C) located in different parts of an actively transpiring plant are given below:
| Cell | Osmotic Potential (MPa) | Pressure Potential (MPa) |
| A | – 0.87 | 0.44 |
| B | – 0.92 | 0.34 |
| C | – 0.68 | 0.27 |
Identify these three cells as root hair, root cortical and leaf mesophyll cells respectively. The correct answer is.
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Solution
The correct option is C C, A, B
Water potential of the given cells are
Ψ = ΨS + ΨR
A = − 0.87 + 0.44 = − 0.43
B = −0.92 + 0.34 = − 0.58
C = − 0.68 + 0.27 = − 0.41
As water moves from greater potential to less, root hair, root cortical and leaf mesopyll cells are C, A, B respectively.
Water potential of the given cells are
Ψ = ΨS + ΨR
A = − 0.87 + 0.44 = − 0.43
B = −0.92 + 0.34 = − 0.58
C = − 0.68 + 0.27 = − 0.41
As water moves from greater potential to less, root hair, root cortical and leaf mesopyll cells are C, A, B respectively.
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