Planaria And Dugesia Lab Report
Abstract:
Planaria were studied to test their movement in relation to the number of different sensory cues they were receiving. Planaria were placed into two similar environments where light was manipulated to simulate night and day with food particles also in the environment. Since the planaria, Dugesia, have both chemosensory and photo sensory abilities, the idea was to test whether eliminating one of the sensory cues would result in a further displacement from their original position. Through several tests, it seemed as though elimination of one sensory cue allowed them to focus either solely on the other (the food cues) and had a further displacement toward the food source, supporting the hypothesis.
Introduction:
Most organisms have multiple ways of sensing their environment. An object of some debate is at whether multiple sensory cues at once inhibit or enhance cognitive abilities or if it would be better to focus on one at a time. The organism under study, Dugesia, has two types of sensory capabilities: photo sensory and chemosensory. The primary sensory processes are through the use of chemotaxis and the use of photoreception is much …show more content…
The average distance of the planaria in the light environment was 1.8 centimeters while the planaria in the dark environment traveled an average of 4.3 centimeters. The planaria in the light environment traveled 2.5 cm less on average than he planaria in the dark environment. The data obtained is displayed in the figures below. The planaria in the dark environment went further in both trial 1 and 2 but had a smaller total displacement than the planaria in the light environment in trial 3. The first trial had the largest average for total displacement in the dark environment whereas the third trial had the largest average for the total displacement in the light
Planaria were studied to test their movement in relation to the number of different sensory cues they were receiving. Planaria were placed into two similar environments where light was manipulated to simulate night and day with food particles also in the environment. Since the planaria, Dugesia, have both chemosensory and photo sensory abilities, the idea was to test whether eliminating one of the sensory cues would result in a further displacement from their original position. Through several tests, it seemed as though elimination of one sensory cue allowed them to focus either solely on the other (the food cues) and had a further displacement toward the food source, supporting the hypothesis.
Introduction:
Most organisms have multiple ways of sensing their environment. An object of some debate is at whether multiple sensory cues at once inhibit or enhance cognitive abilities or if it would be better to focus on one at a time. The organism under study, Dugesia, has two types of sensory capabilities: photo sensory and chemosensory. The primary sensory processes are through the use of chemotaxis and the use of photoreception is much …show more content…
The average distance of the planaria in the light environment was 1.8 centimeters while the planaria in the dark environment traveled an average of 4.3 centimeters. The planaria in the light environment traveled 2.5 cm less on average than he planaria in the dark environment. The data obtained is displayed in the figures below. The planaria in the dark environment went further in both trial 1 and 2 but had a smaller total displacement than the planaria in the light environment in trial 3. The first trial had the largest average for total displacement in the dark environment whereas the third trial had the largest average for the total displacement in the light