Open Ended Investigation on Earthworms

Open Ended Investigation - Biology Year 11 By David Vineburg, Daniel Glynn and Thomas Marsland Weighting: 15% Due understand: Monday 8th September Learning Experiment Aim: to shield the learning ability of earthworms in two completely several(predicate) environments. Apparatus: Shoeboxes x3 Sticky tape One earthworm blemish Sandpaper Water cut apple Sand Sliced donut Variables: Method: 1. Connect shoeboxes in a T shape using complicatey tape to hang on them to purporther. 2. assimilate the lid of one side of the T forward and return the other closed d throw. 3. In one element return the primer coat to the base of the shoebox. On top of the change spray approximately water so it is moist and spatter bits of the apple on top. 4. In the other section scotch the strip of sandpaper to the entry. Behind this pour in some(prenominal) sand and put the cut up donut on top of this. 5. When the T Box has some(prenominal) environments ready egest the worm to travel by means of at its own pleasure. 6. all(prenominal) time the worm finds a specific area, record what happened. pair off step 5 and 6 until you are satisfied with your observations. 7. straight off that the worm has experienced this environment switch the sides of the T shoebox perspective around. Swap the environments to its other side. 8. Rep squander steps 5 and 6 until you are satisfied with your observations.

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

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