Subject: Why will plants grow in Diet Coke and water and not other sodas?

We did this experiment in class and wondered if the sugar in the other 
liquids had anything to do with the lack of growth.  We used coke, diet 
coke, water, apple juice, cranberry juice, sprite.  Only the plants using 
water and diet coke grew.  Thank you.

We used seeds - brassica, rye grass, and alfalfa.  We
used small cups with holes in the bottom.  We planted the seeds in soil and
then "watered" each set with the liquids I mentioned.  For example, we
"watered" brassica seeds, rye grass, and alfalfa with coke.  We used all
three types of seeds with each liquid.  All three seeds sprouted with the
diet coke and water, but none of the other seeds showed any growth at all.  I
hope this helps as my class is wondering and I cannot find anything as to why
this happened.
Thanks again!!!

Response:

Re: Why will plants grow in Diet Coke and water and  not other sodas?
We did this experiment in class and wondered if the sugar in the other 
liquids had anything to do with the lack of growth.  We used coke, diet 
coke, water, apple juice, cranberry juice, sprite.  Only the plants using 
water and diet coke grew.  Thank you.


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Hi Chris - It would help us to know what kind of plant(s) you were using, 
how many you had in each group that was watered with a particular liquid, 
and for how long you treated them with the particular fluid. Also - did you 
water them from seeds, or start with grown plants?
Thanks.

	Lynn Bry, Admin MadSci Network

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Re: Why will plants grow in Diet Coke and water and not other sodas?