distinguish between active and passive absorption in plants

Dear student,            
Please find below the solution to the asked query         
​Passive absorption is a process where water is absorbed as a result of tension created by transpiration pull. It occurs mainly due to the activity of upper part of the plant such as shoot and leaves.

Active absorption is the process through which water is absorbed by roots on their own. This occur when transpiration is low and thus the quantity of water is high in the soil.  

Hope this information will clear your doubts about the topic.   
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