Question

Which is not true regarding active water absorption?

• A. Require energy
• B. Occurs only when transpiration is slow
• C. Living cells are essential
• D. Force develops in shoot

Answer 1

Answer: (D)

Force develops in shoot

• Active absorption of water occurs in root cells which utilizes the metabolic energy released through respiration. It is of two types. Osmotic absorption is when water is ab­sorbed from the soil into the xylem of the roots according to the osmotic gradient. And Non-osmotic absorption is when water is absorbed against the osmotic gradient. Usually, transpiration is passive absorption but when it is low active absorption occurs.
  
• It takes place in living cells.
  
• The force for passive absorption develops in shoot not of active absorption.
  

So, the correct answer is 'Force develops in shoot'.