Petri Dishes Report

The top cover of the petri dish was put back on and the planarian was put back into the cabinet. The shocking process was conducted 5 days a week and once per day. However, the feeding process was either 2 or 3 times a week and it was also done once per day. A month after testing the planarian, it was time for it to be cut and regenerated to see which half would respond to the flash of light.
There had to be a way to cleanly slice the planarian in half so it could perfectly section of the head and tail section. So a scalpel was used to cut the planarian and it was cut halfway down from the head. It was picked up with an eyedropper, then it was placed on a microscope slide. The slide was cooled so when the planarian would hit the cold, it would not move and it was able to be cut. It was cut right above the stomach and gastrovascular cavity because if that was cut through, the planarian would die and not be able to regenerate. …show more content…
The head section was picked up with the eyedropper and placed into a petri dish with aquarium water. The tail section was picked up the same way but put in a different petri dish with aquarium water. Then the petri dishes were labeled with head or tail section depending on which was it was.
The final testing was shocking both of the the cut planarian, the regenerated head section and the regenerated tail section. Both of the new planarian were brought out of the cabinet and set on the white note card. The flashlight was turned on and the electrodes were lowered into the water, as the testing was the entire experiment. After we gathered the reaction of the head section, which was positive, we gathered the reaction of the tail section and that was also a positive reaction. The planarian were drawn out by the eyedropper and was released into a jar with aquarium water with all of the other planarian. The water from the petri dish was disposed and so was the