Salt Pollution On Duckweed

4.Measure 35mL of warm water and add them into each of the 4 test tubes at about roughly the same time. It is essential that the water is warm. Do not seal the test tube.

The hypothesis that was being tested was if the salt facility was leaking salt, then the crops will not grow. The hypothesis was supported by the data gathered because it proves that the seeds in the sites located near the salt facility did not grow at all, but the other seeds did when they were not affected. Site B and D’s seeds did not even sprout and they were located either by the salt facility or slightly downstream. Site Cand E was farther down the river and was not affected by the salt. Site A was completely before the storage facility and was not affected in anyway since it was the control of the

For the experiment to be carried out it was required of the experimenters to first fill up two cups of the same height to the halfway point, filling one of the chosen cups with 6 tablespoons worth of table salt. Once done, it was required of the experimenters to stir the salt water solution to ensure that the salt had properly dissolved with a spoon. Once done, the two eggs would be inserted into the normal water, then the salt water – from which they determine a conclusion on data that was found.

It is determined that the higher concentration of saline, that is added to the bean plants, the faster that they will die off. With the saline concentration of 1%, 1.5%, 2% and 3%, 2 plants on each concentration will be examined. Overtime a change in the length of stem, width of leaves and how many leaves should change over time. Osmosis plays a big part in the role of absorbing minerals and water into the plant.

Aquatic plants are an important component of lake systems. These plants may be totally submerged beneath the lake surface, floating, or growing along the shoreline. They provide food and shelter for bugs, fish and other organisms, prevent shoreline erosion, filter pollutants from adjacent shoreline activities, and provide oxygen to the surrounding environment.

Once the plants have sprouted and grown for about two weeks, they were ready for observations. Six different groups in the lab class compiled data by counting each plant of how many tall vs. dwarf plants have grown. A class average was then calculated to have accurate and precise data.

The aim of this practical was to test whether a Scarlet Globe Radish will grow higher in cm when watered using different types of water and the hypothesis was that scarlet globe radishes should grow higher when watered with sparkling water as it contains co2 however that hypothesis was proven incorrect. From results it can now be concluded that the control patch surprisingly produced the highest plants in terms of height with an average ground to leaf height of 2.2 cm while the sparkling water patch produced 1.86cm and the filtered water patch with an average height of 1.18. However, from research it was shown that sparkling water was more likely to make radishes grow at a faster rate. A faster growth rate would’ve made the radishes taller

Looking back at the experiment, my hypothesis was not correct because seeds that were in a concentration of more than 6.25% of saltwater did germinate. Furthermore, Eighty percent (four out of five) seeds in our control group germinated because the water was pure and didn’t have any NaCl in it. The one seed that didn’t germinate was probably because it was either too dry or wasn’t spaced out enough to grow. The results indicated that the lower the NaCl concentration in the water, the higher the number of germinated seeds were and the plastic bags with the higher concentration rate had very few seeds that germinated. However, there were a few odd results. For example, the bag with the 25% concentration rate had more seeds germinate than the bag with the 12.5%

2 tbs of rock salt into all 3 jars, with each person measuring at the same time.

Results The results from this experiment show that the hypothesis was not supported. It was hypothesized that the Basil plants would grow the tallest in the soil with a pH value of 5. However, the Basil plants in the soil with a pH value of 5 did not grow at all. On the other hand, the Basil plants in the soil with a pH value of 7 grew the tallest.

Have you ever wondered what would happen if plants grew in acidic water? What about bottled mineral water? Water with fertilizer? Well, now you can know! In my experiment, I will be testing which type of water will help the plant grow better. In this case, I will be using duckweed to test the water. Duckweed is a very small, green plant that floats on the water’s surface. My hypothesis is that the duckweed will grow best in fresh water because duckweed is usually found growing abundantly in freshwater ponds or lakes.

Analysis of Results Throughout this experiment the Controlled group height is always ahead of the Experimental Group. Eventually the Controlled Group is more than triple the size of the Experimental Group. On day 35 the average plant height for the Experimental Group was 3.1667 centimeters and the Controlled Group with a 18.25 centimeters. In the Experimental Group, Cell 1 had a height of 3.5 centimeters, Cell 2 never grew, Cell 3 had a height of 7.0, and Cell 4 had a height of 8.0 centimeters.

Then take one 100 mL beaker and label it with the red maker “HCl” and pour 30 mL of 1.0M HCL into this beaker. Follow this by taking a second beaker and writing “Na2S2O3” and pour 30 mL of 0.30 Na2S2O3 into the beaker. Then label the final 100 mL beaker H2O and place 25 mL of water in that beaker. Then take the blank white piece of paper and draw 6 circles, in the formation of two rows and three columns so that they line up under the six wells. Then using the black expo marker draw a large X in each circle. The piece of white paper should look like figure

Next, fill each beaker with 100mL of distilled water and submerge the bags in the beakers. Allow

The root apical meristems in a plant’s root controls new cells elongating and initiating differentiation into primary tissues and downward growth. Do to the nature of plants, they are completely susceptible to the environment that they are growing in. Many factors influence plants, salinity is one of the most prevalent. soils that are affected by salt concentrations are mainly present in dry or semi-dry areas and can arise from natural a process called primary salinity, for example weathering of mineral rocks. In these dry areas, there is often inadequate rainfall or drainage to move the salt down through the soil so it can ebb away from plant roots. Another form of salinity in soil is secondary salinity where land is cleared for shallow growing crop plants and the natural vegetation with deeper penetrating roots is destroyed. Consequently the underground water table is raised to the new crop plants and salinity is brought with it.