Lab Report On Duckweeds

If saltwater is applied to a plant, the plant would shrivel up and die. This is a result of the water moving out of the cells in order to try to balance the concentration of solute compared to inside the cell. The water movement out of the cell would cause the cell to shrink and the lack of water would eventually cause the plant to die.

If I had lived during the Holocaust, the hardships would include lack of shelter, starvation, and survival. To start, people struggled to find a safe shelter. The book Milkweed is about a boy who has to change the locations of his shelter to be able to survive. I know that during this time period a lot of people who were jewish were taken to concentration camps were they were forced to work and were treated harshly. Because of this people had to change the location of their shelter to escape getting caught. Additionally, people also had to face the struggles of starvation. Since hitler and his nazis were killing off a lot of people, the people who owned food stores could no longer sell food. This meant that people couldn’t get the same amount

Milkweed is a book about a boy who is called Gypsy, Stoptheif and Jew. He becomes friends with a group of orphaned Jewish boys and lives with them. He is given a name and a backstory from Uri, who protects him. The name is Misha Pilsudski. Misha wants to become a Nazi when he gets older because of their boots but changes his mind. Misha meets a Jewish girl named Janina Milgrom, her family is forced to move to the Warsaw Ghetto. Misha eventually becomes part of the family and lives with them in the ghetto. Every night Misha slips through the 2 brick hole in the wall around the ghetto, to steal food. While Misha is stealing food he sees Uri and is warned to escape from the ghetto because trains are going to take the Jews away. Misha comes home

Saline environments tend to hinder agricultural production by lowering crop yields, often quite substantially. The traditional response to the threat of salinity-induced crop yield reductions is to apply water in excess of plant requirements so as to leach the salts out of the root zone. (Letey and Dinar, 1986).

Willy is allergic to ragweed pollen and tells you that he read about a medication that could help his condition by blocking certain antibodies. However before Willy can take certain medicine to help with his condition. We must understand what exactly ragweed allergy is and figure out the best treatment for his allergy. As stated by acai.org,” Ragweed Allergy. The pollen from ragweed causes allergy symptoms in many people. These symptoms include sneezing, runny or stuffy nose, and itchy throat.” Willy allergy is very common around the United States. If you may be affected by this pollen then there are numerous solutions to control the condition of this ragweed. When Willy was reading that article he may have come by a medication named Ragwitek.

Thirty percent of Warsaw’s population were Jews prior to the Holocaust, which was a staggering 350,000. However, during the Holocaust 400,000 Jews were forced to live in grotesque conditions by the Nazi regime. In the novel Milkweed by Jerry Spinelli, Misha, a young orphaned boy, befriended a group of boys living in a barn. As turmoil spread in Europe about the Nazi reign, Jewish people were captivated and imprisoned in ghettos to be isolated from the rest of the population. Ensnared to stay with his “pseudo” family, Misha, lives with the Milgroms in a ghetto. As the story progresses, different themes such as famine, disease, and death, manifest throughout the novel resembling the annexation of the Nazi party and the captivity of millions

Abstract As the human population grows to unprecedented levels reducing our impact on water resources is of utmost importance. The significance of our effect on freshwater becomes much greater as more people are relying more on safe, sustainable water therefore; we must try to understand every component of our ecosystems. With increases in human population nutrient loading has increased in our waterways through fertilizer runoff of agricultural lands and through waste water treatment facility stream enrichment. Nutrient enrichment has been studied more with excessive loading from agriculture and also untreated waste water, but the effects of nutrient loading from modern waste treatment facilities is lack luster. Our designed experiment tested the effect of external nutrient input into a stream on rate of leaf litter decomposition in two water systems. The study consisted of a single species of leaf, Populus balsamifera, we determined leaf breakdown rates using percent leaf mass remaining over the eight week study. Also measured was the biomass of macroinvertebrates relative to the mass of the cottonwood leaves at three weeks. Our results showed a 2x greater leaf litter decomposition rate on Bozeman creek than the East Gallatin below the water reclamation facility and 4x greater rate than the East Gallatin above the water reclamation facility. Macroinvertebrate shredder numbers were the highest at the

Helenium autumnale or the Sneezeweed is native to Kansas, but can be found in most of the united states. Height of the plant can reach anywhere from three to five feet and spreading two to three feet. The Sneezeweed is a flowering perennial that has one to two inch yellow flowers with ray like petals. The plant blooms late in summer and into fall. Growing conditions for the Sneezeweed are in rich, wet soils and they cannot tollerate dry soils. The Sneezeweed also needs to be grown in full sun.

How does the amount of salinity affect how much oxygen is given off by duckweed?

Range.—Giant milkweed is native to West Africa as far south as Angola, North and East Africa, Madagascar, the Arabian Peninsula, southern Asia, and Indochina to Malaysia (Rahman and Wilcock 1991). The species is now naturalized in Australia, many Pacific islands, Mexico, Central and South America, and the Caribbean islands. Ecology.—Giant milkweed favors open habitat with little competition. This condition is most completely met in overgrazed pastures and rangeland. Other common habitats are beachfront dunes, roadsides, and disturbed urban lots. The species grows in dry habitat (150 to 1000 mm precipitation) and sometimes in excessively drained soils in areas with as much as 2000 mm of annual precipitation. Giant milkweed may be found in areas

My hypothesis is incorrect because I thought that the salt water would make the plant grow taller than the plant that had tap water, but that actually wasn’t true, the plant that had tap water grew taller than the plant that had salt water. In this project I measured the difference from which plant grows taller using salt water and tap water. The tap water grew the plant the tallest, in trial one it’s growth five, in trial two it’s growth was four, and trial three its growth was six. The salt water grew the plant the shortest, in all of the trials the plants growth was zero.

This project helped to see if increasing aquatic plants could reduce the pH of water. Three fishbowls were used with different amounts of plants in order to receive results. One

The plants that grow in saline soils have diverse ionic compositions and a range in concentrations of dissolved salts (Volkmar et al., 1998). These concentrations fluctuate because of changes in water source, drainage, evapo-transpiration, and solute availability (Volkmar et al., 1998). Due to these varying conditions, plant growth depends on a supply of inorganic nutrients, and this level of nutrients varies in time and space (Maathius and Amtmann, 1999). Either extreme condition concerning nutrients results in deficiency or toxicity in plants, and this is demonstrated by salt tolerance (Maathius and Amtmann, 1999). These conditions vary according to the plant species and growth conditions. Little is known about the genetic basis for diversity of salt tolerance in plants, and this could be partly explained through the definitions given for salinity.

The data show that salinity stress levels increased sodium and decreased potassium contents in the shoots and fruits of pepper plants which is a typical response of plants in saline environments arising from the inability of plants to distinguish between sodium and potassium ions (Storey et al., 1983). The increase in Na+ content mainly in the vacuole provides an osmotic adjustment of salt affected plants (Sakr et al., 2007). This accumulation might be due to the important role of sodium in increasing osmotic pressure.

Salt stress affects many growth parameters i.e. germination percentage, root and shoot length, root and shoot dry matter, root /shoot ratio and so on. The detrimental effect of salinity occurs because of osmotic stress [10] and specific ion toxicity [11]. Rice is rated as an especially salt-sensitive crop [12, 13]. But the response of rice to salinity varies with growth stage. In the most commonly cultivated rice cultivars, young seedlings are very