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Q.

Which one of the following is not a natural process ?

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a

Transpiration

b

Guttation

c

Plasmolysis

d

Imbibitions

answer is C.

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Detailed Solution

  • When a cell is placed in a solution having high concentration, then the protoplasm will begin to shrink and leave the cell wall. 
  • This shrinking of protoplasm is called plasmolysis which is not a natural process.
  • Transpiration is the exhalation of water vapor through the stomata which is a natural process.
  • Guttation is the process of secretion of water droplets from the pores of some vascular plants.
  • Imbibition is a process in which water absorption takes place by substances without solution formation. When seeds are immersed in water, they swell due to imbibition.
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