Question
The driving force for the translocation of organic solutes through phloem is __ gradient
Answer:
:
Due to the presence of sucrose in the sieve tube cells water enters into sieve tube cells and a hydrostatic pressure builds up. At the sink osmotic pressure is reduced as sugars and removed. Hence water flows out of phloem and into the sink, reducing the hydrostatic pressure in the phloem vessel. This gradient in the hydrostatic pressure facilitates the mass movement in the phloem.
Was this answer helpful ?
:
Due to the presence of sucrose in the sieve tube cells water enters into sieve tube cells and a hydrostatic pressure builds up. At the sink osmotic pressure is reduced as sugars and removed. Hence water flows out of phloem and into the sink, reducing the hydrostatic pressure in the phloem vessel. This gradient in the hydrostatic pressure facilitates the mass movement in the phloem.
Was this answer helpful ?
More Questions on This Topic :
Question 7. Water lost by transpiration is ______.....
Question 9. The water potential of pure water is _____.....
Latest Videos
Latest Test Papers
Submit Solution