For lab six, the class was given the task to come up with any experiment using the material given on the overhead. The question my group was trying to test was, does a variation in solution affect the growth or production of duckweed? Duck weeds are one type of plant that has the ability to eliminate nitrogen and phosphate out of fresh water. This is called phytoremediation (Bunnell 84). Since humans use other organism to clean up environmental contamination, we would call this bioremediation. Duckweed can also be used as a natural wastewater system treatment method, which is ideal for developing countries (Nhapi 2004). Duckweed based ponds in combination with pre-treatment may be a feasible option for organic matter and nutrient removal …show more content…
(Caicedo 2000).
Duckweed is a very reliable organism and can be used in many positive ways in many ecosystems. Nutrients levels are very important and should be calculated in order to determine the right amount for plant growth. According to other studies, the overstimulation of phosphorus leads to complete dominance of duckweed and disappearance of plant growth (Liere 2007). The purpose of placing the duckweed into the nitrogen and phosphate solution, is to see how well duckweed is at phytoremediation. In this case, we are trying to test the same results along with high nitrogen levels. If duckweed is proficient at doing so, then the production and growth of duckweed would fluctuate instead of decline. Based on the high levels of nitrogen and phosphorous, our group’s hypothesis was that duckweed growth would prosper and …show more content…
produce tremendously. We believe since duckweed can get rid of nitrogen and phosphate out of fresh water, then it will work in similar ways and grow. Will duckweed do best in high levels of nitrogen and phosphate solution or regular fresh water? Based on our results and conclusions, we were ______. The high levels of nitrogen and phosphate caused the duckweed to_______. METHODS The procedures were very easy.
Following directions, paying attention, and being careful were the harder tasks. Before one starts any experiment, it is important to always be cautious and use safety first. Even though Professor Demor gave each of the eleven groups an opportunity to create their own experiment, there were specific rules each of us were still required to follow. Each group was required to use a minimum of ten duckweed plants. We were also required to use a maximum of 50 ml of solution of our choice. Lastly, professor gave us a maximum of nine cups for replication. We did not have to use all nine, it was up to us. Every group was different, but this is what our group experimented. Our group decided to see what effect high phosphate and nitrogen levels had on the growth of duckweed. The phosphate level was 100 ppm and the nitrogen level was 1760 ppm. As a group we set up three replicas cups with 50 ml of solution and one cup with 50 ml of regular pond water. After filling the cups with the right amount of solution, we took the duckweed out of the original container, using a _________ and placed it into the proper cups. In order to see a major difference amongst duckweed growth, we used 10 duckweed plants per cup, most having only 1-3 fronds. After that, we labeled the cups properly. To stop contamination, all cups were covered with plastic wrap and was securely held down with a rubber band. Lastly, once everyone finished, we were asked to place
our class experiments into a specific spot in the room so we could access it easily to obtain our results the next week. Upon finishing, it was essential for everyone to clean up their table to stop the spread of germs and bacteria.
Planarians are free-living, carnivorous flatworms found in the Phylum Platyhelminthes, Class Turbellaria. Although the Phylum Platyhelminthes is known for having the animals with the most parasitic species, the class Turbellaria which consist of the Planaria, are a non-parasitic species. Platyhelminthes which translates to "flat worm" are triploblastic animals. This means that they have three tissue layers, the endoderm, mesoderm, and ectoderm. Planaria also are monoecious organisms, meaning that they have both female and male sex organs in one organism. Another characteristic of the Planaria is that they do not have a true body cavity, meaning that they are acoelomate organisms.
The objective of this experiment is to determine which of three weed kill methods will be most successful in killing the Cobblers peg weed over a five day period. Two of the weed kill methods are natural - boiling water and vinegar solution. One of the weed kill methods is a weed spray Yates ZERO.
Biology Lab Report Lab No. 18: Biochemical Genetics: Smooth Peas Wrinkled Peas Data Presentation: The diagram of cotyledon for smooth and wrinkled pea is attached to the next page. The table of starch presents is below: Type of Pea Starch Present? (Color change) Smooth
This report is on a virtual experiment based on the real-life experiment accomplished by John Endler and David Reznick of the University of California. The goal is attempting to determine whether or not the level of predation effect’s the color patterns of guppies.
The pondweed was put inside the measuring cylinder, with a paper clip on one end to weigh. it down to the sand. I then added sodium hydrogen to the water in the measuring cylinder to make sure that the amount of CO2 was kept constant through the experiment. The beaker full of water was used as a heat shield. which was placed halfway between the bench lamp and the pondweed.
...e starting the experiment, being very carful with all the measurements and trying your best to keep everything that’s meant to be the same all equal to everyone else’s. If your working in groups the aim would be to get similar results without having large different between the few otherwise if your results are not close or similar that usually means something went wrong along the way. The results ended up consistent to what most of us thought would happen with the bacterial growth.
Our subject plant for this experiment is Helianthus annuus, a common sunflower plant cultivated all over the world for its seeds and seed oil. Helianthus is an annual plant that grows from 1 to 3 meters, depending on conditions. It is for this reason I chose Helianthus as our subject plant. Shorter plants have a less measurable variable. Helianthus plants, with their long straight stems, would have a much easier variable to measure. A total of 24 Helianthus plants, six to each pot, will be used in the treatment. The large number of subject plants is because of genetic variation that might sway my results if I were to use only a single treatment pot.
Writing in Biology is different than writing in other courses like English. In Biology, the writer must conduct an experiment prior to writing a lab report on the findings. For this lab report, I had to conduct an experiment comparing the cellular respiration rates of germinating peas and non-germinating peas. Before beginning the experiment, we had to create a thesis that would state which set of peas would have the higher respiration rate, germinated or non-germinated peas. We were expected to make a thesis based on our prior knowledge of how cellular respiration works in plants. I conducted the experiment during class two weeks before the lab report was due. The experiment consisted of placing peas in a Biochamber where the levels of carbon dioxide and oxygen would be measured every 6 seconds for 3 minutes. After completing that, my instructor stressed that we repeat the experiment 5 more times for each set of peas. After collecting the data, we compare...
In this lab, we viewed Allium Root Tip and Whitefish Blastula cells under the microscope in order to view the different stages of Mitosis. The purpose of this activity was to visualize the process of cell reproduction, and the results of our experiment conclude that 44% of the Whitefish Blastula cells were in Prophase, 18% in Metaphase, 21% in Anaphase, and 17% in Telophase, so cells generally spend a longer amount of time in Prophase.
The very first step of my experiment is to get all the equipments and materials I need. What I need for this experiment are six kinds of berries I chose, enough yeasts, x-ray machine and materials for comet assay. The first step of my experiment is to give berries to the yeast. I will give berries to yeast by blending the berries using the blender, and then whiz it, so I can add the juice from the berries to the yeast. While I am doing my experiment I will have to decide how much juice I add to yeast. Then after adding the juice I will x-ray the yeast with the x-ray machine, with the help of an adult. After x-raying the yeast I will use the comet assay technique to see if it damages it or no. My final step is to collect the data.
It is important to keep your duckweed cultures clean. If you collect fresh duckweed specimens from nature, the water will contain a variety of other organisms. These will include bacteria, fungi, algae, protozoa, and even small multi-cellular animals and insect larvae. You can clean up your duckweed cultures by transferring the plants individually to clean fresh water. Remove damaged and aged (yellow or white) fronds from your cultures as they appear.
Out of the 12 water tests conducted along different sides of the lake, there seemed to be a great concentration of nitrate and phosphate near the City of Jaffrey, the main water treatment facility, and the side of the farmland with West Side Park. As stated before, the local limit for the concentration of phosphate is 0.1 ppm. Phosphate levels in the parts of Jaffrey Lake near the farm and city were tested to range from 0.5 to over 2.5 ppm. That is 5 to 25 times more than the limit! On the other hand, nitrate was also tested to have 25 ppm in these same areas. That is more than twice the local limit. At every other side of the lake, phosphate levels were within the local limit at 0 to 0.19 ppm. Nitrate was also below the limit at 2 to 4.9 ppm across the lake. This shows that there are specific areas of
Japanese Knotweed is a bamboo-like plant. It tends to grow in large clusters and can spread rather quickly. This plant is not native to the United States, and sadly, it is beginning to take over.
One of the themes that Milkweed expresses throughout the plot line is survival. All the main characters in the book had to do certain things in order to survive. For example, Uri tells Misha -who at the time had no name- to “take only what he needs.” This shows that Uri really does care about Misha survival. The other skills the boys used were remaining invisible, stealing food, using a rug to keep warm, and drinking bomb crater water. If I lived in the time of World War II, in the city of Warsaw, I would probably use the skills the boys used to survive. My family would be priority, so I would make sure to steal more for each member; however, if one of my family members was dying, I probably wouldn’t try to save them because if we were to get
My goal was to find out which plant would grow faster based on what I watered them with. With the data presented in my tables you can see which plant grew taller than the others. Overall, my experiment did show how planted do not necessarily need to be watered with water to grow healthy and strong. However, I did realize that all three plants were growing at the same rate when given the same amount of fluid. A weakness in my experiment is that I gave each plant 1 ½ tbs of water, soda, and juice. Another weakness may be that the plants did not get as much light they needed to grow bigger, healthier, and stronger. A strength in my experiment is limiting how much sunlight they received even though it was a weakness because we can see if plants