QUESTION

James W. Perry jperry at UWC.EDU
Mon Jul 12 16:20:23 EST 1999


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Well, I waited until now to stick my neck out, but it has been my
understanding
that at least certain "waste products" become compartmentalized in the
vacuole(s). From Esau, Plant Anatomy...

"In contrast to animals, which normally eliminate excess inorganic material to
the exterior, plants deposit such materials almost entirely in their tissues.
The inorganic deposits in plants consist mostly of calcium salts and of
anhydrides of silica."

While most of these substances are localized in the vacuoles as crystals,
there
are reports of cytoplasmic structures as well (or maybe better termed
'hyaloplasmic' structures).

Is an "excess inorganic" substance a waste product? Sure seems to be that it
could fit the definition.

jim

James. W. Perry, CEO/Campus Dean
Professor, Department of Biological Sciences
University of Wisconsin - Fox Valley
1478 Midway Road, P.O. Box 8002
Menasha, Wisconsin 54952-9002
Office: 920.832.2610
FAX: 920.832.2674
jperry at uwc.edu 
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<html>
Well, I waited until now to stick my neck out, but it has been my
understanding that at least certain &quot;waste products&quot; become
compartmentalized in the vacuole(s). From Esau, Plant Anatomy...<br>
<br>
&quot;In contrast to animals, which normally eliminate excess inorganic
material to the exterior, plants deposit such materials almost entirely
in their tissues. The inorganic deposits in plants consist mostly of
calcium salts and of anhydrides of silica.&quot;<br>
<br>
While most of these substances are localized in the vacuoles as crystals,
there are reports of cytoplasmic structures as well (or maybe better
termed 'hyaloplasmic' structures).<br>
<br>
Is an &quot;excess inorganic&quot; substance a <u>waste product</u>? Sure
seems to be that it could fit the definition.<br>
<br>
jim<br>
<br>
<div>James. W. Perry, CEO/Campus Dean</div>
<div>Professor, Department of Biological Sciences</div>
<div>University of Wisconsin - Fox Valley</div>
<div>1478 Midway Road, P.O. Box 8002</div>
<div>Menasha, Wisconsin 54952-9002</div>
<div>Office: 920.832.2610</div>
<div>FAX: 920.832.2674</div>
jperry at uwc.edu
</html>

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