Higher Plants Contain Many Phytochemical Constituents That

The use of too much fertilizers, and in particular, of fertilizers with high concentrations of nitrogen, has been linked to reduced biodiversity (Xiankai et al. 2010). It becomes necessary to consider the detrimental effects of high concentrations of fertilizer in the reduced spaces. Fertilizers are salts, and therefore high concentrations of fertilizers can deplete the plant from water.

An important part of photosynthesis is the intake of carbon; thus, it can be presumed that increasing the amount of available carbon will increase photosynthetic activity. In most plants there is an increased rate of photosynthetic rate, but it is limited by other factors and reaches a plateau (Lei H, Zhishan Z.

The purpose of this lab was to investigate and observe the effects of organic vs. synthetic fertilizers on plant growth by planting lima beans with added amounts of fertilizers, and to see how does adding different nutrients to the soil affect the growth of the lima bean? A significant difference was examined between the plants that contained manure and miracle growth, unfortunately the plant with no additional fertilizers (Plant #3) did not show any growth. The plant that grew the most was the one that contained manure, to an extent the one that grew the most in a short period of time was the one that contained miracle growth, as shown in figure I. The hypothesis explaining if the Lima Bean plant contains synthetic nutrients in the soil then

War, A., Paulraj, M., Ahmad, T., Buhroo, A., Hussain, B., Ignacimuthu, S. and Sharma, H. (2012). Mechanisms of plant defense against insect herbivores. [online] NCBI. Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3493419/ [Accessed 10 Mar.

While experimenting with the green beans, the seeds exposed to the organic plant food germinated within five days of the experiment and the seeds exposed to the chemical plant food germinated within six. The seeds that acted as the control had been expected to grow the least, however, it was surprising that they did not grow at all. Both the chemical and organic fertilizers proved to have positive results on the plants. It was also unexpected when the seeds exposed to the chemical plant food surpassed the height of the other experimental seeds after being shorter. The predicted reason for the increase in growth with seeds given Miracle Grow was because chemical fertilizers automatically store up the nutrients and disperse it constantly throughout

The purpose of this experiment was to test how the variation of pH values affects the germination of a genetically enhanced seed. The experiment was conducted by using three different liquids: vinegar, baking soda + vinegar, and water. Seeds were placed in petri dishes containing the liquid and the growth was measured (mm) weekly with a ruler. Trends include the large amount of growth from the H2O seeds and little to no growth from the vinegar seeds. Uncertainty stemmed from the change in weather and the ruler.

In this lab, four different types of leaves were tested to see the rate at which each leaf photosynthesized. This lab demonstrates how plants store light, capture light, and use light as energy for reproduction and growth, by photosynthesis. The control in this experiment was spinach, which was tested before any of the other plants were. The other plants that were tested were English Ivy, C4 Plant, and a multicolored plant. Each type of leaf was tested in a sodium bicarbonate solution and a solution of distilled water. It will be shown in the discussion whether the hypothesis made was correct or incorrect. It will be shown in the discussion what could have

Abstract: During photosynthesis plants take light energy and turn it into chemical energy. The purpose of the study was to test the effect of various lighting conditions on the rate of photosynthesis. In this experiment the rate of photosynthesis is measured by timing how long it takes photosynthesis to occur in ten leaf disks that are in a solution of carbon dioxide. The prediction for this experiment was that if a plant receives more light, then it will have a higher rate of photosynthesis. The data supports the hypothesis, because the rate of photosynthesis is higher in direct sunlight than in the shade. This experiment untimely lead to the conclusions that light and carbon dioxide are necessary for photosynthesis to occur.

Results found the necessity for light and CO2 in photosynthesis. As shown in Figure 1, the light + CO2 treatment had approximately 55% of disks float. The mesophyll layer of a leaf has many spaces filled with gas, causing floatation. However, all gases were removed from the Beta vulgaris disks in this experiment and replaced with water and dissolved sodium bicarbonate respectively. The sodium bicarbonate releases CO2, allowing photosynthesis to occur. Exposure to light also helps the Beta vulgaris photosynthesize and produce oxygen, therefore causing floatation. Light enters the chloroplasts of a plant and becomes stored as chemical energy in organic compounds, which are produced from CO2 (Mudie, K. and Brotherton, J. 2004). This supports the idea that light and CO2 together drive photosynthesis to

A bar graph representing how much photosynthesis three separate Elodea plants were able to perform under three different light treatments, normal, red and green light. The light treatments enhanced certain wavelengths of light which, due to the absorption spectrum of chlorophylls a and b and carotenoid pigments, altered the amount of photosynthesis a plant was able to perform in a certain amount of time. Each Elodea plant was subjected to a different light treatment, one to normal light, another to red and the third to green light while in a test tube of water for a total of two hours. Photosynthetic processes were observed by means of water displacement in the pipette attached to the test tube and were measured in millilitres. The mass of

Different types of organisms behave differently in their environments. They may flourish and grow well close together, or they may compete over resources. One plant may even stunt the growth of another plant by stealing all of the water and nutrients. This is known as an allelopathic effect. There are various different types of plants that have this effect on other plants.

In this practical, six bags containing twelve histrix cactus seeds each were taken and another six bags containing twelve rocket salad seeds in each bag. Each bag was experimented with different concentrations of gibberellic acid to see how fast each would grow. Gibberellic Acid is an organic

Gibberellin Acid is a plant hormone that can affect plant growth by manipulating the cell division, stem elongation, and even mobilizes food resources within the endosperm to increase seed germination (Wiathrop, 1998). This experiment took place to test the factor of whether or not gibberellin could allow a seed to germinate and grow in the absence of light. Plants were distributed five drops of gibberellin and then placed in the cabinet for a total of three weeks. Each week, we recorded the growth of each plant. As a result of the three weeks, only one of the two hormone-induced plants successfully sprouted to a total of 16.2 centimeters. The other hormone-induced seed showed germination however, resulted to zero vertical growth,

This lab was conducted to see what happens when black tea and water are used to enhance the growth of a radish plant. The hypothesis was that the plants that were given the black tea and water mixture were going to grow faster than the control plant (Devonte). The hypothesis was partially correct because all the plants grew substantially large closer to the end of the lab. Plant 2 (Bravo) started to wither away and die because it was over fed, and eventually drowned in water. The other two plants grew at a consistent pace and developed into healthy mature plants. To sum up, the lab that was conducted was successful in the sense that two out of the four plants grew rapidly without the use of enhancements or

Our Allelopathic plant “Black Walnut” produces a chemical called Juglone. When Juglone is exposed to air or soil it is oxidized as an allelochemical that is very toxic, However Juglone can be beneficial to plants surrounding the black Walnut tree. Black Walnut Allelopathy can restrain germination of plants, therefore it is important to plant tolerant species near Black Walnut trees.Through this experiment of the germination of the Black Walnut tree and the Wisconsin Fast Plant with the addition of Eucalyptus, we were able to determine that Juglone does not effect the growth of the Wisconsin Fast Plant.