exp design for yearlong

exp design for yearlong - Taarika George Period F Due TITLE...

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Taarika George Period F Due 10/29/04 TITLE: How Direction of the Light Source Influences Direction of Plant Growth INTRODUCTION: The problem in this experiment is to see whether bean stems will grow downward if only light sources come from below. This experiment will be performed to show whether plants grow upwards because that’s the way they are supposed to, or if they grow up because their light source comes from above. If light sources come from below, then the plants will grow downwards. This is because previous studies have shown that plants grow toward their light source. The plants need the light in order to perform photosynthesis, so they need whatever light they can get. If the only light source they can get is coming from underneath, they will have to use it in order to live. INDEPENDENT VARIABLE: The independent variable in this experiment is the direction of the light source. DEPENDENT VARIABLE: The dependent variable in this experiment is the direction of plant growth. CONTROL: The control in this experiment is the light source coming from above. CONSTANTS: The constants include environmental conditions, the amount of water received, the type of water, the type of seed, the number of seeds, the location of the plants, and the type of soil. NUMBER OF TRIALS:
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This note was uploaded on 09/11/2011 for the course RECON 69 taught by Professor Bahls during the Spring '98 term at Northeastern.

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exp design for yearlong - Taarika George Period F Due TITLE...

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