Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

what is munch hypothesis

Asked by aishwarynigam nigam 26th January 2014, 7:39 PM
Answered by Expert
Answer:
Hi Aishwarya, It was explained by Ernst Munch. According to this hypothesis, the active transport of sucrose from mesophyll cells of leaf (load) to the companion cells and sieve tubes of phloem decreases the water potential in the phloem. This results in entry of water into sieve tube from adjacent xylem vessels by osmosis. Due to entry of water, hydrostatic pressure builds up in the phloem which causes the movement of sucrose from phloem to sink i.e. other cells such as stem cells or root cells by active transport. This results in increase in water potential inside the phloem and thus water moves out of the phloem by osmosis.
Answered by Expert 28th January 2014, 4:31 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Browse free questions and answers by Chapters

Latest Questions

CBSE XII Commerce Accountancy
Asked by Smitakhadayate20 18th August 2018, 5:45 AM
ICSE X English
Asked by steward_aguiar 18th August 2018, 3:25 AM
ICSE VI Grammar
qsnImg
Asked by prisha.bhalla 18th August 2018, 12:15 AM

Chat with us on WhatsApp