Biology Seedling Report
“Biotic components are the living things that shape an ecosystem. A biotic factor is any living component that affects another organism, including animals that consume the organism in question and the living food that the organism consumes” (Biotic components, 2013). Each biotic factor needs energy to do work and food for proper growth. The aim of our experiment that will be conducted in class is to see whether or not competition between plants for water and sunlight will affect their growth. To do this we will set up two pots with soil in them, one will have a radish seed inside and the other will have a radish seed surrounded by crest seeds. The independent variable will be the amount of seeds in each pot and the dependent variable will be the height of each radish at the end of the experiment. The constant factors will be the amount of sunlight each pot receives; this will be done by placing both pots by the window every day and also the amount of water each pot receives will be another constant factor, this will be done by measuring out ten millimetres of water for both pots. I hypothesise that the radish seed without competition will grow much faster and stronger than a seed that is growing with competition. Abstract
The aim of this practical was to test the hypothesis that either having competition or no competition will affect the rate of growth of a radish seed. The way we would conduct this was using a test having two pots, one containing a radish seed and crest, the other having just the radish seed. This would reveal how well a radish seedling grows with competition around it and if the radish without competition would grow bigger and stronger. We conducted the experiment and found that the radish with no competition out grew the other radish by a couple of centimeters. Materials Required:
* Two small pots.
* Two radish seeds.
* Twenty four grass seeds.
* Measuring scales.
References: Biotic components. 2013. Biotic components. [ONLINE] Available at:http://www.botany.uwc.ac.za/sci_ed/grade10/ecology/biotic/biot.htm. [Accessed 04 June 2013].
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