NEET Biology question
Not in NEET syllabus
Study the following table showing the components of water potential in closely arranged mesophyll cells A, B and C. Identify two of the following, which show the correct direction of water movement between two cells.
| Cell | Osmotic Potential | Pressure Potential | |------|------|------| | A | −0.21 | 0.05 | | B | −0.22 | 0.02 | | C | −0.23 | 0.05 |
I. A → B II. B → C III. C → A IV. C → B
Answer: (C)
Solution
Water potential Ψw = Ψs + Ψp: A = −0.21+0.05 = −0.16; B = −0.22+0.02 = −0.20; C = −0.23+0.05 = −0.18. Water moves from higher to lower water potential, i.e.
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