The overarching purpose for this experiment is to determine if the amount of light shining on a radish seed impacts it in positive or negative ways. Our hypothesis was, if we expose more light on the radish seeds over the course of three days, then it will germinate at a faster rate. After collecting two sets of data over the course of two weeks and closely observing the radish seed for 3 days, the hypothesis was not supported by the data. Even though during the first week of tests done on the radish seeds showed that the amount of light doesn’t really impact the radish seeds because there was 100% germination in all three levels of light after three days. Nonetheless, after performing the experiment a second time, it was evident that the radish seeds need a balance between light and no light, which was supported by the data in the second experiment. …show more content…
And for this reason, it is clear that the hypothesis was disproven because the seeds under the most light (24 hour lamp) did not germinate the best. Seed germination occurs when the seed is exposed to the appropriate temperature and, “is provided with water.” (Hangarter). Along with these factors, other factors like air moisture and light conditions have to be correct in order for a seed to germinate (Penn State). If germination was to appear in darkness, then it has been tested and proven that after the shoot (stems, leaves, buds) emerges, the actual growth of the root slows down in the following days and weeks (Hangarter). Based on the lab results done in class, this information supports the fact that radish seeds do not depend on only darkness to thrive in its
The experiment was designed to test the hypothesis by planting an increasing number of genus Helianthus (sunflower) seeds in pots to see how they respond to increased density in limited space. Two replicates each of 2, 4, 8, 16, 32, 64, and 128 seeds were planted in similar size pots containing an equal mix of potting soil and perlite. All plants were kept in greenhouse conditions exposed to similar light and temperatures settings and were watered at equivalent intervals. At the end of the time period each pot was evaluated for number of seeds that had germinated as well as number of stems with blooms. Stems and blooms were cut and weighed.
The germinating seeds consumed almost no oxygen throughout the experiment in the 10-degree C water bath. I think that this is because when an organism cools down, all of its cellular functions slow down.
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.
The Effect of Light Intensity on the Rate of Oxygen Production in a Plant While Photosynthesis is Taking Place
The Lettuce Challenge Experiment Design faced several errors that could have altered the course of the experiment. The experiment had tolerable results, however, they may have been more accurate if the errors had been refined. The first error that was noticed was the fact that the lettuce was not watered during the weekend. In addition, the lettuce was not given extra water on friday. The lack of water could have affected the growth of the plant. The amount of water given to the experimental plant differed from the control as well. The control was given 10 extra ml of water on friday while the experimental plant was not. Because the amount of water given to the control was different to the plant that was experimented
Seedfolks is a book about family. One day, a little Vietnamese girl named Kim plants some lima beans in a vacant lot in Cleveland to honor her father who was a farmer. A neighbor notices and decides to plant her own plants. Soon, more neighbors notice and do the same. Soon, the vacant lot turns into a community garden. The people of Cleveland have to avoid their differences and come together as a family to make it successful. The book Seedfolks implies that family is the true source of love because almost everybody in the book does something to express their love through the garden. The garden becomes somewhat like a family, and brings the community together.
the effect light has on the growth of pea plants. It will take place in an environment with controlled light, with equal amounts of plants being grown in the light and in the dark. All elements of the experiment other than light will be kept the same, such as amount of seeds in each pot, amount of soil in each pot and amount of water given to each plant each day. This will ensure a fair experiment. Prediction: I predict that in general, the plants grown in the light will grow better than those grown in the dark.
We used wheatgrass were 40 wheatgrass seeds, two empty pots, soil, and water. We first added soil for both pots and 20 wheatgrass seeds in each pot. My partner and I decided that we label pot one experiment which is “sugar and water” and pot two control which is “water” only. The experiment was for almost four weeks we had to make sure both get the same room temperature and water, so we can see the results after this amount of time. Both pots had same room temperature so both can have the same amount of sunlight also, the same amount of water which is a glass of water from the sink once a week. In the experiment pot we added a glass of water with one teaspoon of sugar and the control pot glass of water. Every week we used to see both pots grow almost the same. At the end of the experiment, my partner and I measured the length for both plants and we recorded the average for each plant, so we can know the rate of growth
(2012) studied the effect of visible treatments on postharvest of fresh-cut romaine lettuce. This results showed that high light intensity at 2500 lux can improve the quality by inhibiting browning on wound compared to dark storage. On the other hand, Martínez-Sánchez et al. (2011) studied fresh-cut romaine lettuce under light at 6µmol.m-2s-1, light cannot improve quality and browning inhibition. Consequently, light intensity plays an important role in improving quality of plant. Similarly, the response of light to stimulating or inhibiting PAL activity and phenolic compounds depends on light intensity. Hence, the objective of this study is to identify impact of light on physiological and biochemical changes such as leaf color, visual appearance, the development of browning, phenolic compounds etc. lead to better understanding in the role of different light conditions on lettuce leaves after
Seed, a book by Lisa Heathfield, applies the idea that knowledge is power, but ignorance is bliss through the character development of Pearl, the deep descriptions of the settings and ambiguity of Pearl’s knowledge on certain scenes. Seed’s narrative quality explores that knowledge does not always make one influential, however, not acquiring knowledge means not feeling conflicted.
During the following lab, an aquatic plant was covered with a funnel and was placed underwater inside a beaker, with a graduated cylinder (submerged in water) was placed over the neck of the funnel. This lab tested out which source of light which is the independent variable would allow the aquatic plant to produce the most bubbles (dependent variable) and photosynthesize the fastest. This is clearly displayed because when photosynthesis is produced underwater it appears in the form of bubbles inside the water. These bubbles will travel up through the funnel and displace the water in the graduated cylinder. The dependent variable was tested by placing the four, 5cm aquatic plants in the beakers directly in front of the sources of light and observing how many bubbles were produced within the period of 10 minutes and how much water was displaced by the oxygen bubbles. The beaker in front of the light source with the most bubbles produced and with the most displaced water performed photosynthesis faster than all the other light sources. The sources of light used for this lab were sunlight, florescent, red, and yellow lamp lights, and
Seedlings characteristics are during the growth time as a crucial factor in determining the ultimate fate of the plants. Therefore should be tried always seedlings have to very good condition. Seedling growth and quality are under influenced by environmental factors including light intensity (Lavendar, 1984). If environmental factors such as light intensity changes, also are under affect other factors and final quality of seedlings (Chaar et al., 1997). Seedling producers with changing and optimizing the light intensity regulated the seedlings growth, development, and plant vegetative quality (Lavendar, 1984).
Kale is something that many cooks have not come across but if you find out a little more about it, you will find out that kale is very versatile and can be used in many different recipes. Kale is a delicious leafy green and there are many kale recipes to choose from out there. You might want to try a kale soup recipe, a kale salad recipe or add it to stews and casseroles.
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.