IGCSE GCSE 0610 Plants Transport Translocation Revision Note
8 views 0 purchase
Course
Biology 0610
Institution
GCSE
Book
Cambridge IGCSE Biology Coursebook with CD-ROM
This revision notes provide detailed explanations, clear and concise pictures and concepts to help users understand the topic of IGCSE GCSE 0610 Biology translocation.
IGCSE Biology Topic 1 (Characteristics & Classification of Living Organisms)
Class notes biology: Characteristics of living organisms
Class and mark scheme notes Biology Cambridge IGCSE with Biology Coursebook with CD-ROM
All for this textbook (50)
Written for
GCSE
GCSE
Biology 0610
1
All documents for this subject (17)
Seller
Follow
MC28
Content preview
A. TRANSLOCATION IN THE PHLOEM
Translocation:
The MOVEMENT of SUCROSE and AMINO ACIDS from the LEAVES (the SOURCE) to
GROWING REGIONS that are RESPIRING (the SINKS)
• The leaves are the source as sugars are made there, in photosynthesis.
• The growing regions are the sinks as sugars are transported there, and used in
respiration for growth
B. HOW SUCROSE IS TRANSPORTED IN THE PHLOEM
General principle
• Hydrostatic pressure is the pressure of a liquid – in this case, water.
• This is all about creating a hydrostatic (liquid) pressure gradient between the source
(leaves) and the sinks (growing regions = roots) from top to bottom.
• This is what makes the liquid containing dissolved sucrose move down.
SOURCE HIGH
HYDROSTATIC
(leaves) PRESSURE
SINKS LOW
HYDROSTATIC
(roots) PRESSURE
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MC28. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R74,43. You're not tied to anything after your purchase.
