Dandelion flower stalks (scapes) will bend upwards pretty rapidly if you
fasten them down horizontally.
D. Robinson, Bellarmine College
>Dear Colleagues,
>Does anyone have a good physical demonstration of how unequal
growth in a
>stem can result in growth towards or away from something? I have
2-D
>pictures, but I was trying to come up with some analogy, or demo,
that
>shows clearly how such unequal growth can cause bending in the
phototropic
>response, or in twining for vines.
>Thanks for any ideas you have. Again, I'm looking for a physical
or visual
>demo, not a static, 2-D picture.
>Kath Archer
>
>
>
Dr. Cynthia M. Galloway
Assoc. Professor of Biology
Dept. of Biology
Campus Box 158
Texas A&M University
Kingsville, TX 78363
(512)593-3790
