Open Ended Investigation on Earthworms

Open Ended Investigation - Biology Year 11 By David Vineburg, Daniel Glynn and Thomas Marsland Weighting: 15% Due learn: Monday 8th September Learning Experiment Aim: to essay the learning ability of earthworms in two completely dissimilar environments. Apparatus: Shoeboxes x3 Sticky tape One earthworm footing Sandpaper Water chopped apple Sand Sliced donut Variables: Method: 1. Connect shoeboxes in a T shape using complicatey tape to hang on them to purporther. 2. ask the lid of one side of the T forward and offer the other closed d sustain. 3. In one element exercise the primer coat to the base of the shoebox. On top of the ground spray approximately water so it is moist and disperse bits of the apple on top. 4. In the other section vex the strip of sandpaper to the entry. Behind this pour in near sand and put the cut up donut on top of this. 5. When the T Box has two environments ready fall the worm to travel by means of at its own pleasure. 6. al l(prenominal) time the worm finds a specific area, record what happened. twin step 5 and 6 until you are satisfied with your observations. 7. directly that the worm has experienced this environment switch the sides of the T shoebox locating around. Swap the environments to its other side. 8. Rep obliterate steps 5 and 6 until you are satisfied with your observations.

Questions Benefits of Earthworms in soil? Earthworms tunnel through the earth, excreting polysaccharides. Polysaccharides are sugars that act like glue to pouffe out the pencil-size tunnels, preserving them for years. As they move through the earth both horizontally and vertically earth! worms drag bits of organic material around, dowery to change integrity organic matter into the soil. As they eat the organic material, they wrench it into rich nutrients by leaving castings everyplace they go. If you want to get a full essay, order it on our website: BestEssayCheap.com

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