... an agar filled Petri-dish with/without a bacterial attractant and with/without structure. The experiment is interested in the neurological basis of behaviour. A type of behaviour that has always fascinated scientists is how animals appear to know where they are going, and often times travel many times their body length to get to their goal. Materials Agar gel in Petri-dishes / Filter Paper / Free-living Nematode, Panagrellus redivius in distilled water / Chemicals: 1mM Vanillic acid (a known volatile chemo-attractant in other systems); 1mM Glucose (purified food source); yeast extract (complex food selection source); 1mM drug (an anti-nematode agent); Basic solution, Acidic solution and Neutral solution; extract of dead Panagrellus nematode worms (to measure the avoidance factors); and secretary products (source of communicating chemicals/pheromones) / Low power microscope / Plastic Pasteur pipettes / Plastic gloves / Forceps and scissors (from dissection kit) / Bottle of distilled water / Sand Grains / ...

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