Once a plant begins growth, it depends on multiple abiotic factors to continue growing: light, carbon dioxide and water. These three factors affect the growth rate of a plant, causing it to grow quicker or slower. Furthermore, altering these factors may stunt plants growth or improve it. For example, plants require an adequate amount of water to survive. Water hydrates the plant and also breaks down the minerals in the soil. As the plant absorbs the water, nutrients are transported into the cells. In addition, Light intensity varies depending on the season, for example during winter, days are shorter as thus daylight is minimised for plants, however as spring approaches the amount of sunlight available to plants increases, thereby …show more content…
Found in the chloroplasts of plants, chlorophyll absorbs certain wavelengths of light within the visible light spectrum (webexhibits, 2016). Chlorophyll is able to absorb light colours such as red and blue however green is reflected making the plant appear green. Apart from colouring, the fundamental role of chlorophyll is to channel the energy of sunlight into chemical energy. There are multiple types of chlorophyll however all land plants contain chlorophyll a and b. The main differences between the two are that Chlorophyll A is the principle photosynthetic pigment, present in all photosynthesising autotrophs with the exception of bacteria and it becomes blue green in its pure state. Whereas, Chlorophyll B is an accessory photosynthetic pigment, becomes olive brown in pure state and is not evident in diatoms, cyanobacteria and red and blue bacteria. Chlorophyll is also called photoreceptors which by definition are a structure in a living organism, especially a sensory cell or sense organ that responds to light falling on it. In this instance, the photoreceptor traps light and exploits it through the process of …show more content…
The aim of the experiment was to record the changes in plant physiology when certain plants were exposed to the inorganic or organic fertilisers. It was hypothesised that when the plants were given fertilizers the growth rate would be