Essay On Glow Worm

The dependent variable is pulsation rates of L. variegatus before and after they were in the treatments. The standardized variable of this experiment would be the temperature of the surroundings of the L. variegatus, the three pulsation rates taken for each worm before and after the treatments, and also the amount of time each worm was kept in their respective treatments. The level of treatment for this experiment would be ten because of the six different concentration treatments of caffeine and nicotine along with the four household drugs. The sample size of the experiment differed from some treatments to other. For the three different concentrations of caffeine and nicotine, the sample size was 18 black worms each. The sample size of the control treatment of week 1 was 6 black worms. 12 black worms were used for the control of week 2, decaffeinated coffee and instant coffee. 11 black worms were used for the tea treatment and 15 were used for the tobacco treatment. There were three replications of the pulsation rate readings per worm before and after the treatment. With all this information we were able to get the results we got.

The first variable tested was phototaxis, the movement toward or away from light. To do this, we used an empty petri dish and filled the bottom of it with filter paper. We then added five sowbugs to the petri dish and placed a lid on top. After leaving the sowbugs alone for three minutes to get acclimated to their new environment, we placed a lamp directly over the petri dish. Then we laid a piece of cardboard over the petri dish to cover exactly half of it, leaving the other half exposed to the lamp. We want the cardboard to cover close to half of it as possible to make the data as accurate as possible. The lamp was then turned on and the number of sowbugs in the light and dark locations were recorded every minute for the next twelve minutes. As shown in Table 1, we determined that sowbugs are effected negatively by phototaxis.

Kinesis occurs when the animal moves in a random motion in response to the stimulus. Throughout this lab, we put the pillbugs through four different tests. These experiments are to test to see if these animals will prefer a certain habitat rather than another and how they show this is through either kinesis movement or taxis movement.

The Earthworm is a crucial component of the environment due to their interactions with soil which then, in turn, provides benefits to other living organisms such as their burrowing behavior, which allows nutrients, air, and water to delve deeper into the soil. After soil is swallowed by the pharynx, the food matter is sent through the esophagus and into the crop, where the soil is stored until it interacts with the gizzard. The main function of the gizzard to grind the soils so that it can enter the intestine, where gland cells within release fluid to aid in the process. When organic matter is finally excreted from the intestine to the anus through the worm through the process of casting, more nutrients are introduce into the soil that benefit plant life. The earthworm also has a brain located behind its pharynx, called the cerebral ganglia, that is crucial for movement. The

2. Pin the earthworm to the tray using one pin on either end of the worm.

Purpose: The purpose of the lab is to find out the change in mass of the mealworms and the potato slice and compare them. It is also to find out how much carbon dioxide is in the container at the beginning and the end of the experiment.

For the bacteria to become fluorescent, the environment must contain arabinose and the bacteria must have the GFP gene. Furthermore, the bacteria must have a nutrient supply in order to thrive. In this experiment, this was provided by the LB nutrient.

Purpose: We want to see if putting a worm or organism in different temperature will change the rate of CO2. We predict cold will make the process slow down. Hot will speed it up, and with room

The glow worm’s habitat is undisturbed woodland and caves around the world. Glow worms are mostly active during night which is when they can be seen glowing. They are one of the few insects that are found inside the Arctic Circle. The glow worm is famous for having a green and yellow colored light on the end of its tail. Glow worm’s main prey is snails, slugs, and insects. Their predators are spiders, birds, and centipedes. The glow worm’s conservation status is threatened and the number of species is 12. The average lifespan for a glow worm is up to 5 months. A glow worm is an omnivore and is up to 1-2 inches long. The glow worm also has a shell like skin type.

For the farmers of south east QLD (Australia), Barbers Pole worm is the main worm internal parasite infecting their sheep. This is due the amount of rain and the summer heat. Due to the weather and the climate of south east QLD, makes it the perfect environment for the Barbers Pole worm to infect the sheep. The Barbers pole life cycle is as so, once the barbers pole worm has laid its eggs in the stomach of the sheep, (barbers pole worm can lay up to 10,000 eggs per day), the worm eggs move through the digestive track and are mixed in this the fesses, the fesses are pooped out and into the land, the eggs hatch within 4-10 days, they will hatch faster in hot climate and slower in cold. Once the eggs have hatched they begin to feed on the bacteria

Tapeworms are parasites that can live in your intestines. When a tapeworm lives inside of you, it is called a parasitic infection. An adult tapeworm can grow very long and can live inside of a human for many years.

To determine the effect that a surface has on the speed and difficulty of mealworm travel.

Fly vials were used and filled up to about an inch with the prepared food. The inside side were cleaned to avoid any flies from sticking to the food. Fly netting was used and cut to fit into the tube for the larvae to crawl of when they reach metamorphosis. Ten beads of yeast were put on the food. The vial was then closed with a cotton ball and put aside.

The eyespots of the flatworms are very simple structures, which is hard to form images because the hollows lack the needed structures for focusing not like human eye structure. The pigment that reacts to the light, it contains a protein called opsin. Its function to change a wavelength of radiation into something else so the nerve can respond to. Its only function to distinguish between light and dark. The eyespots are located at the head end, which are known as primitive eyes. Flatworms tend to move away from the negative stimulus. The flatworm will go to the direction that the eye is less stimulated while detecting light. It will move toward darkness to avoid light to protect themselves from the predators. Flatworm is a model used to examine regeneration and stem cells biology to know the functions of stem cells in all animals. Regeneration can be affected by certain chemicals, shock and temperature. Two of the common drugs, or chemicals are caffeine and ethanol. Stimulants in general are drugs that increase energy, attention, heart rate, breathing rate, and suppress appetite. The most common stimulants are caffeine, nicotine, Adderall, cocaine, and Ritalin. Caffeine

However, the experimental group did prove a slight consistency. Table 2 displays that in the 0.5 MRR row, the three larvae observed had 4, 6, and 6 waves, with the second and third having the same number of waves. Likewise, the second and third larva in the 1 MRR row also had the same number, only having 2 peristaltic waves. When we increased the MRR to 1.5 and 2, all observed larvae did not move at all. This is because by increasing the MRR, the likelihood of the blue light flashing increases. At 0.5 MRR, the blue light would flash once every two seconds. This allowed the experimental group to slightly move before they were forced to contract when the blue light would shine on them again. Once the MRR was set to 1, the light would flash once every second, decreasing the amount the larva would move and thus, decrease the peristaltic