Elodea

Introduction The objective of this lab was to investigate what an osmolarity of sodium would be best for the Elodea plant. Osmolarity is a measurement of solute concentration, defined as the number of osmoles of solute per liter of solution. When a cell is in an isotonic solution there is no net movement of water due to equal amounts of osmoles inside cell and in solution. When a cell is in a hypotonic solution cell will immediately start to swell because there are too few osmotically active solutes

October 02, 2015 Elodea Canadensis, also referred to as American waterweed or common elodea, is an aquatic plant that is usually found in lakes, ponds or even rivers. Elodea helps support aquatic life such as young fish and amphibians by providing shelter and can be consumed as food by ducks and beavers. Elodea, like many other plants, relies upon photosynthesis to acquire its energy and to make food. To determine the importance of light energy in the process of photosynthesis, two Elodea plants were

Lab RECAP: Plasmolysis In this lab we learned about plasmolysis. We completed this lab to study the effects of salt and distilled water on elodea cells. We first took a leaf of an elodea plant and placed it on a slide with a drop of distilled water. We then placed a cover slip over the leaf and observed the leaf under a compound microscope with lenses that magnified the cells 100 times and then under a lense that magnified the cells 400 times. We then recorded what we saw by drawing a couple cells

not equate to a long lifetime. During the lab we took the data from three parts: Diffusion, Osmosis in an Elodea Cell, and finally the Role of Osmosis in Cystic Fibrosis. During Part 1 we looked at diffusion across a semipermeable membrane for starch and glucose, which resulted in both having a negative solution when placed in a semipermeable membrane. Then we looked at osmosis in the Elodea Cell to watch for the occurrence of Plasmolysis, when a cell’s plasma membrane pulls away from the cell, and

The Effect of Light on Carbon Dioxide Exchange in Elodea Background- The purpose of this lab is to find out what effect light has on absorption and release of carbon dioxide in Egeria densa, better known as Elodea. This research can be used to see what effect plants have on carbon dioxide. The belief is that when light is present then carbon dioxide will be absorbed and when light is not present then carbon dioxide will be released. This can be backed up by Miller and Levine’s Biology textbook

Elodea was cut up into a 10cm length piece and bottom of stem was cut off allowing water to flow through the xylem (use the same piece, allowing more accurate results) 2. ¾ of a 500mL beaker was filled with tap water 3. A glass funnel was placed in the beaker, along with the elodea (as shown in the apparatus above) 4. A test tube was filled ¾ with water 5. The test tube was

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

From the Elodea cells, we see the membrane pulling away from the cell wall in hypotonic solutions, flaccid in isotonic solutions, and firm in hypertonic solutions. We can apply these findings to the potato cells. The very soft potatoes are plasmolyzed (in hypertonic

Elodea will only survive when grown below the water's surface. When left out of water, elodea will shrivel up and die. Its small white flowers are the only part of the plant that will flourish out of water, and these emerge in late summer. Elodea spreads and propagates when portions of the stem break away from the parent plant and form new plants . Soil Elodea grows in most soils but prefers a sandy sediment that's rich in minerals and has a neutral ph. The stems extend from

The Effect of Different Light Colors on Elodea and the Production of Oxygen Through Photosynthesis Introduction: Life could not exist without oxygen and one of easiest ways for oxygen production is through photosynthesis. Photosynthesis is a process that converts solar energy into chemical energy which can then be used by the autotroph, an organism that can sustain itself without consuming another organism. Photosynthesis as an energy source is mainly used by green plants. The equation for photosynthesis