The investigation was completed over a period of a week for a wide range in the results to base experimental conclusions. From the primary data obtained, the pattern of the results supported the hypothesis and followed the trends of the theory discussed earlier and also the reflection spectra (Figure 2). The vertical growth of height table and graph (Table 1 & Figure 3) demonstrates the effects isolated colours of light have on the vertical growth of plants via mung beans. In the experiment of this investigation, vertical growth of the specimens of mung beans under the different colours of light was measured in response to time in days. From the results collected, all the values were expected and assisted to validate the findings of secondary experiments conducted by previous researchers.
The table illustrates clear and concise results on the effects, the colours of light have on the height of mung beans. From Day 1, this data favours blue light as the best colour for the vertical growth of plants while green light proved to be the most detrimental to the plant growth. The full spectrum or the control variable, followed after the blue light, also indicating a healthy sign for plants. Closely behind the full spectrum was the plant placed under the red light with only 0.2 cm less than the height controlled variable. Along with green light, the colour yellow was also found to be disadvantageous to the growth of plants. The graph shows a linear trend which indicates the vertical growth of the beans according to the colours. The R2 values indicates the line of best fit and values either 1 or near one refers to the validity and accuracy of the data respective to the type of trend. From the graph, the relationship of between the colour...
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...ve this experiment, another mung bean plant should have been placed with clear cellophane. This can further analyse if cellophane may have influenced the growth of the plants and the efficiency of the colours of light. In order to rid this error, instead of cellophanes, bulbs can be used as they will emit proportionally more wavelengths of light accordingly. Another variable that can be controlled is the day-night length and this error can be deducted also by using strong light bulbs greater than 25 watts to provide sufficient light to the mung beans specimens for 12 hours and by boxing the plants for next 12 hours. This investigation can be further explored by investigating the effect of colours on different types of plants such as native plants i.e. Grevillia and Banksia and also the effects colours of lights has on the nutritional and chemical values of plants.
Investigating the Effect of Light Intensity on the Size of a Plantain Leaf Title: To investigate the effect of light intensity on the size of a plantain leaf. Hypothesis: I predict that the size of the plantain leaves would increase as the light intensity decreases. Therefore, plantain leaves found in the shade will have larger surface areas than leaves found in an open area. Theory: Sunlight is an essential factor need to complete the process of photosynthesis.
Experiment #1: The purpose of this experiment is to investigate the effects of baking soda and light intensity on the rate of photosynthesis of green spinach leave through the observation of floating disk.
In this laboratory, the degree of absorbance for the pigments in a leaf sample were observed using mechanisms that involved pigment isolation from a leaf extract, obtaining wavelength measurements, and displaying the measurements on an absorption spectra.
The Effect of Light Intensity on the Rate of Oxygen Production in a Plant While Photosynthesis is Taking Place
The Effect of Wavelength on Photosynthesis Rate Aim: To be able to To investigate how different wavelengths (colors) of light affect the photosynthetic rate of the synthetic. I will use a pant that is a pond weed called elodea. I will measure the rate of photosynthesis by measuring the amount of o2 given off in bubbles per minute from the elodea. I will do this by placing the Elodea in a test tube with sodium hydrogen. carbonate then I will vary the light wavelength (color) using colored.
Comparing the Growth of Pea Plants Grown in the Light and in the Dark Aim: To compare the vertical growth and weight gain of pea plants grown in the light and in the dark. Background Knowledge: Photosynthesis forms the basis for this experiment. This is the process by which a plant makes food for itself from the raw materials around it. The energy needed for photosynthesis comes from sunlight, which is the variable for this experiment.
Materials used in the experiment included 5-7 g of the potato tissue, 50ml of 2.0M phosphate buffer coffee filter and guaiacol dye.
The cultures were maintained at 25±20C under 16 hr illumination of 4000 lux intensity. The results are presented in Table 1, it can be seen from the data that pH of the medium had significant effect not only on regeneration frequency but also on number of shoots developed in each culture. Maximum 62.5±4.7 percent cultures in CoS 98259 and 67.3±4.9 percent in CoS 767 developed shoots at pH 6.0 while regeneration frequency was the lowest at pH 5.6. An increase in pH form 6.0 to 6.2 and 6.4 reduced the frequency of shoot regeneration from the callus (Table
I chose to measure this growth by observing the number of stomata present on the underside of leaves exposed to the dark and to sunlight. Based on the idea that there are more open stomata present on leaves exposed to the sun, my hypothesis that 'Factors which might affect stomatal opening' (Light) there will be more stomata on the plants exposed to the light. Hypothesis = == ==
The system involved in this lab was L-dopa as a substrate, enzyme was Tyrosinase, and the product was Dopachrome. Tyrosinase is commonly known as polyphenol oxidase, an enzyme that present in plant and animal cell (#1 Boyer). In plant cell, the biological function if Tyrosinase is unknown, but its presence is readily apparent. Tyrosinase is also involved in the browning of fruits, tubers, and fungi that have been damaged. In mammalian cell, Tyrosinase is involved in melanin synthesis, which gives skin its color. It will act on the substrate L-dihydroxyphenylalanine (L-Dopa) and convert to Dopachrome, which is the product that has color, and it can measure at 475nm using the Spectrophotometer. This work based on the Beer-Lambert’s Law (A=εlc), A stands for Absorbance, ε is extinction coefficient or the molar absorptivity (M-1 cm-1), and l is the path length (distance) that light passes through the sample (cm), c is a concentration of solution (M) (#3 Ninfa, Ballou, Benore). Beer- Lambert Law predicts a linear relationship between absorbance and the concentration of a chemical species being analyzed. It states that the absorbance (A) of a sample solution is directly proportional to the concentration (c) of the absorbing colored
Yucel (2013) found that plant density had a significant effect on first pod length, pod number plant-1, seed number plant-1, 100-seed weight and seed yield of faba bean. Moreover, the lowest 100-seed weight, pod number and seed weight plant-1 as well as the highest values of first pod length were obtained from the highest plant density (intra-row spacing of 5 cm). The highest seed yield was obtained from 15 and 10 cm intra-row spacing.
Photosynthetic pigments are essential for life because they allow photosynthesis to occur by capturing sunlight which is then used alongside carbon dioxide and water to form organic compounds such as glucose and oxygen. The pigments allow the conversion of light energy to chemical energy which other organisms can benefit from. Oxygen is utilised by other organisms in aerobic respiration. The different pigments present in the chloroplasts allow a wide variety of wavelengths of light to be absorbed for efficient photosynthesis and provide colours to the plant to attract pollinators.
This is the same if there is the light intensity is too high as this can damage the chloroplasts in plants and this will minimize the rate of photosynthesis. As shown in the graph as the light intensity increases, the photosynthesis rate increases until a point is reached where the rate begins to level off into a plateau. At a low light intensity, photosynthesis occurs slowly because only a small quantity of ATP and NADPH is produced. As the light intensity shown in the graph is gradually increasing, more ATP and NADPH (NADH is used in cellular respiration and NADPH is used in photosynthesis) are produced, which means more oxygen and sugar is produced, therefore increasing the rate of photosynthesis. But as the light intensity increases even more and past a certain light intensity on the graph, this is due to the other factors such as carbon dioxide limiting the rate of
The Effect of Light Intensity on the Rate of Photosynthesis in an Aquatic Plant Introduction The input variable I will be investigating is light, as light is just one of the 4 factors required in the green-plant process of photosynthesis. Photosynthesis is the process by which green-plants use sunlight, carbon dioxide, water & chlorophyll to produce their own food source. This process is also affected by the temperature surrounding the plant (the species of plant we experimented with, pond weed, photosynthesised best at around 20 degrees centigrade.) Light, temperature & CO2 are known as limiting factors, and each is as important as the next in photosynthesis. Light is the factor that is linked with chlorophyll, a green pigment stored in chloroplasts found in the palisade cells, in the upper layer of leaves.
The reason light intensity is being used compared to whether or not a plant needs light. It is because The experiment wants to show that the rates of photosynthesis will vary according to how much light from a light bulb will be trapped in. the chloroplasts, in the leaf. The more energy trapped the more efficient a chemical reaction can take place and the speed of photosynthesis will increase. There are many things which can affect the photosynthesis of a plant such as light intensity, temperature and carbon dioxide levels.