1. Pond in a Jar Experiment
Section 4 Group 5
Anna Beth Reardon
Brandon Weatherford
Elijah Colvin
Cari Ainsworth
Jesus Garcia
2. Hypothesis
Listerine, an antiseptic, will
inhibit all living organisms from
growing, while oats and fertilizer
will initiate the growth of the
respective organisms that feed
on them.
5. Procedure
Jar 1A: Add fertilizer
Jar 1B: Add fertilizer and
Listerine
Jar 2A: Add organic matter
Jar 2B: Add organic matter
and Listerine
Jar 3A: Add fertilizer and
organic matter
Jar 3B: Add fertilizer, organic
matter, and Listerine
14. Jar 2A
Oedogonium
250 different species
Attached to aquatic
vegetation
Vegetative Cell
Diatoms &
Ankistrodesmus
Yellow-green
chloroplasts
Pen-shaped and cylinder
Green algae group/Toxin
24. Conclusion
Our original hypothesis was correct and incorrect at the same
time. Our original hypothesis was that if we tend to the jars,
and insert the fertilizer, organic matter, and unknown
(Listerine) into their respective jars, then we would stimulate
various forms of life within the six different jars, as well as
potentially killing the life with the unknown. In the end, the
Listerine did not kill off most life as it was expected to. There
were various forms of life even in the jars with no Listerine.
We did, however, stimulate life with our organic matter and
fertilizer. Some of the jars ended up with physids, and
multiple different microscopic organisms.
25. Conclusion
The only thing we may would need to do differently is add
more control to the jars by visiting them more than just once
a week. In that way, we could potentially figure out what
exactly is happening to the jars at a given day of the week.
