Botany - Transport in Plants Question with Solution | TestHub
BotanyTransport in PlantsPlant-Water RelationsEasy2 minPYQ_2020
BotanyEasysingle choice
Study the following table showing the components of water potential in closely arranged mesophyll cells namely A, B and C.
| Cell | Osmotic Potential (MPa) | Pressure Potential (MPa) |
|---|---|---|
| A | -0.21 | 0.05 |
| B | -0.22 | 0.02 |
| C | -0.23 | 0.05 |
Identify two of the following, which show the correct direction of water movement between two cells.
I. A→B II. B→C
III. C→A IV. C→B
Options:
Answer:
C
Solution:
Water potential in a cell is equal to algebraic sum of solute potential and pressure potential.
Ψw = Ψs + Ψp
Thus,
| Cell | Water Potential | DPD |
|---|---|---|
| A | -0.21+0.05=-0.16 | +0.16 |
| B | -0.22+0.02=-0.20 | +0.20 |
| C | -0.23+0.05=-0.18 | +0.18 |
Water potential is equal but opposite to DPD. Water move from low DPD cell to high DPD cell.
Stream:NTA_ABHYAS_NEETSubject:BotanyTopic:Transport in PlantsSubtopic:Plant-Water Relations
⏱ 2mℹ️ Source: PYQ_2020
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