One possibility that may not work because it's a bit messy is an orange.
The sections are made up of little "juice vesicles" which are very visible
to the eye and contain only about a hundred cells. Should be visible with
a hand lens. Of course, the reason they're so big is the same reason
they're so messy -- huge vacuoles full of juice. Any citrus should do as
well.
Gary Cote
At 10:17 PM 9/11/00 +0100, you wrote:
>Dear Folks,
>I'm teaching a non-majors plant biology course this semester, and I'm
>starting a section on cells. I'm trying to include as much real
>observation of things as I can, but am constrained by the fact that there
>is no lab, and the class meets in an auditorium.
>Here's what I'd like to do, and I send this out to you all in hopes that
>someone knows how to achieve it. I'd like to pass around a leaf or chunk
>of tissue that has cells of enough size to be seen with a 5X hand lens.
>I'm only shooting for them being able to see the outlines of the cells, but
>not anything within. Any candidates?
>Thanks,
>Kathleen Archer
>>>---
>>>Dr. Gary Coté
Assistant Professor
Department of Biology
Box 6931
Radford University
Radford, VA 24142-6931
Ph: 540-831-5630
Fax: 540-831-6615
email: gcote at radford.eduhttp://www.radford.edu:8800/~gcote/
---
