Go to OSU College of Forestry LWGate Home Page.From: Andrew K Fletcher <thinklateral@hotmail.com>
Subject: [IAWA Forum] Ascent of sap in tall trees
Date: Wed, 1 Jul 2009 08:32:40 +0000
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Question regarding osmosis
If a tree is suspended vertically in a bath of picric acid has it's roots s=
evered as was the case with Strasburger's experiment showing circulation co=
ntinued for weeks following the event=2C despite the tree being completely =
killed by the influx of acid. What would this acid do to the semi-permiable=
membranes within the tree? Worth remembering that the leaves were complete=
ly killed yet obvious transpiration carried on inside the tree unaffected b=
y this destruction of all living processes.
Andrew K Fletcher
_________________________________________________________________
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Question regarding osmosis<BR><BR>If a tree is suspended vertically in a ba=
th of picric acid has it's roots severed as was the case with Strasburger's=
experiment showing circulation continued for weeks following the event=2C =
despite the tree being completely killed by the influx of acid. What would =
this acid do to the semi-permiable membranes within the tree? Worth remembe=
ring that the leaves were completely killed yet obvious transpiration carri=
ed on inside the tree unaffected by this destruction of all living processe=
s.<BR><BR>Andrew K Fletcher<br /><hr />Beyond Hotmail - see what else you c=
an do with Windows Live. <a href=3D'http://clk.atdmt.com/UKM/go/134665375/d=
irect/01/' target=3D'_new'>Find out more.</a></body>
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