Speaking of Kalanchoe...

Jon Greenberg jgreenberg at hal.bscs.org
Thu Feb 10 21:35:20 EST 2000

Speaking of CAM plants, does anyone have an activity for demonstrating
some aspect of this pathway or distinguishing it from C4, in a way that
is suitable for high school students? (14C tracers, for example, are

I thought, for example, that it might be possible to titrate, or just
compare the pH of crude leaf extract at (simulated) dawn and dusk to get
at the idea of a diurnal cycle of C4 acid accumulation.

Many thanks for any ideas.

Jon Greenberg


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