madting101
Badges: 0
Rep:
?
#1
Report Thread starter 6 years ago
#1
Why is root pressure a form of mass transport? need help
0
reply
YesJess
Badges: 2
Rep:
?
#2
Report 6 years ago
#2
Root pressure is a way water moves up the stem. I don't think i've ever heard of mass transport in this unit? There's mass flow, which is the flow of water and assimilates along the phloem. (But i don't think that has anything to do with root pressure)

So root pressure is basically: more water moves into the xylem, which pushes the water already in the xylem up.

The endodermis in the root cells moves minerals into the xylem via active transport = reduced water potential in the root = water moves into the cells via osmosis, across the cortex, and into the xylem = pressure on existing water in xylem = pushes existing water up.
0
reply
madting101
Badges: 0
Rep:
?
#3
Report Thread starter 6 years ago
#3
Thank you. And from the aqa biology book where does mass transport come in what pages specifically please
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Do you have the space and resources you need to succeed in home learning?

Yes I have everything I need (438)
56.3%
I don't have everything I need (340)
43.7%

Watched Threads

View All