Section 4 Group 5Anna Beth Reardon Cari AinsworthBrandon Weatherford Jesus GarciaElijah Colvin

Pond in a Jar Experiment

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.

Materials

Pea gravel

Tap water

De-chlorinator

Aquatic plant

Pond Water

Observations Smell

Clarity of Water

pH

Mold Growth

Algae Growth

Plant Growth

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

Jar 1A

Week 1 Week 4 Week 8

Jar 1A

Jar 1A

Oedogonium Attached to aquatic

plants

Reproduce sexually/asexually

Euchlanis Omnivorous

Use cilia and two strong toes to move

Jar 1B

Week 1 Week 4 Week 8

Jar 1B

Jar 1B

Paramecium Reproduce by

binary fission

Herbivore

Protozoa Most are motile

Reproduce sexually/asexually

Jar 2A

Week 1 Week 4 Week 8

Jar 2A

Jar 2A

Oedogonium 250 different

species

Attached to aquatic vegetation

Vegetative Cell

Diatoms & Ankistrodes

mus Yellow-green chloroplasts

Pen-shaped and cylinder

Green algae group/Toxin

Jar 2B

Week 1 Week 4 Week 8

Jar 2B

Jar 2BAphanizome

non Blue-green algae

Very toxic

Stomach irritation

Jar 3A

Week 1 Week 4 Week 8

Jar 3A

Jar 3A

Protozoa Single celled protists

Heterotrophic

Mobile

Vaucheria Yellow-green algae

Found everywhere

Long branching filaments

Jar 3B

Week 1 Week 4 Week 8

Jar 3B

Jar 3B

Diatom Unicellular and

symmetric

Have hard skeletons

Found in plankton

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.

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.

Questions

Sources Egmond, Wim V. "Microscopy-UK Micscape

Microscopy and Microscopes Magazine." Microscopy-UK Micscape Microscopy and Microscopes Magazine. N.p., n.d. Web. 29 Apr. 2011

"Ankistrodesmus Sp. (NADED 261004)." Ankistrodesmus Sp. (NADED 261004). N.p., n.d. Web. 29 Apr. 2013

"Aphanizomenon Flos-Aquae Side Effects." LIVESTRONG.COM. N.p., n.d. Web. 29 Apr. 2013