Natural Science Forum / Biology / Botany / January 2007

I'm trying to understand better how plants survive the winter in
cold climates.
I know about leaf abscision, annuals and perennials, the
withdrawal of sugars into storage roots, reduction in metabolic

Dear Plant-ed folks:
Do any of you teach a course that is basically economic botany but give
it a different title?  The environmental science prof here wants to
teach a course in economic botany but we don't want to use the word

Dear Plant-ed folks:
Do any of you teach a course that is basically economic botany but give
it a different title?  The environmental science prof here wants to
teach a course in economic botany but we don't want to use the word

How can I identify species Urtica dioica from Urtica radicans? Can someone
help, please?
Also there is another question:
http://img254.imageshack.us/my.php?image=200606270024zc1.jpg

I've just eaten a mandarin orange and the small star shaped thing at
the end of the fruit, was left on my desk, I wondered what it was
called?  I assume it's where the fruit was initially attached to the
tree

I don't have a photo of this yet, but in December I discovered what
appeared to be a vine growing in a field in MA, a field that had not
been mown in several years. Attached to the vine were several
"mini-loofahs" - i.e., they were loofahs about 1.5 to 2" long. At the

Dear Plant-ed folks:
What do you all think about plant physiology textbooks?  I am teaching
plant phys for the first time in a few years and I took a quick look at
the latest edition of Taiz and Zeiger and chose it.  Now I'm realizing

Dear Plant-ed folks:
What do you all think about plant physiology textbooks?  I am teaching
plant phys for the first time in a few years and I took a quick look at
the latest edition of Taiz and Zeiger and chose it.  Now I'm realizing

At the last minute, I'm trying to devise a lab that allows students to
use a pressure bomb to ask an interesting plant water potential question
(this is my intro botany class I can't stop fiddling with).  I've got
two pressure bombs and have to run this lab in late February.  I ...

At the last minute, I'm trying to devise a lab that allows students to
use a pressure bomb to ask an interesting plant water potential question
(this is my intro botany class I can't stop fiddling with).  I've got
two pressure bombs and have to run this lab in late February.  I ...

I have a question
Angiosperms are considered to be the most highly evolved plants. How
are they well adapted to land?
answer how plant structures are adapted to their fuction,

Please id these two plants in the five photos here:
http://pg.photos.yahoo.com/ph/shahswim/album?.dir=/7ba3re2
I found them while strolling near a lake.

Hi Collegues,
I have an enormous list of misconceptions in text-books thanks to David
R. Hershey. But now I am looking for student misconceptions. I am
constructing some cases for students as a teacher trainer.

Hi Collegues,
I have an enormous list of misconceptions in text-books thanks to David
R. Hershey. But now I am looking for student misconceptions. I am
constructing some cases for students as a teacher trainer.

Hi. I wondered if anyone could answer a simple question. Once an ova
has been fertilized by the pollen nucleus, I understand that the ovary
of the plant becomes the fruit and the ovule becomes a seed. What
happens to the other ovum? Also if the ovule becomes the seed, are