Worms Reacting to Different Temperatures of Water
Bryce Kline
Lincoln Dale, Ron Jackson, and Mariela Gonzalez
Biology, Mrs.Harrison
September 25th, 2017
Introduction
Earthworms live in soil and get nutrients from eating the dirt and can eat ⅓ of its body weight, if they get too cold they will freeze and die.(Mrs. Harrison, 2017) When they are in the ground they go as far as 2 meters under and when they are getting cold they can go down further. (Journey North, Uknown time) This lab is important because it will help us understand how worms react to different temperatures of water. All earthworms live in the 2 to 3 inches of soil directly beneath the surface.(Unknown Author, Unknown time from http://animals.mom.me/effect-temperature-earthworm-population-6147.html) When temperature drops below 40 degrees, the worms will start to die off. (Unknown Author,
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The cold water made the worm slow down while the warm water made it go faster. The cold water made worm 2 shrivel while the hot water made it elongate and made it jump away. The worms avoided the cold and warm puddles and not the room temperature puddle.
Conclusion
The data means that worms respond differently to the warm and cold water because the room temperature is what rain would feel like. My hypothesis was slightly correct/ supported because the worms freaked out from the warm and cold water but, the worm did not die from the cold water. Next time we could add ice water and scorch. In the end we figured out that worms hate all temperatures and are very sensitive towards all temperatures that aren’t like rain. This study was very important because it helps us understand part of the why on what we wonder about
The Artemia franciscana can survive in extreme conditions of salinity, water depth, and temperature (Biology 108 laboratory manual, 2010), but do A. franciscana prefer these conditions or do they simply cope with their surroundings? This experiment explored the extent of the A. franciscanas preference towards three major stimuli: light, temperature, and acidity. A. franciscana are able to endure extreme temperature ranges from 6 ̊ C to 40 ̊ C, however since their optimal temperature for breeding is about room temperature it can be inferred that the A. franciscana will prefer this over other temperatures (Al Dhaheri and Drew, 2003). This is much the same in regards to acidity as Artemia franciscana, in general thrive in saline lakes, can survive pH ranges between 7 and 10 with 8 being ideal for cysts(eggs) to hatch (Al Dhaheri and Drew, 2003). Based on this fact alone the tested A. franciscana should show preference to higher pH levels. In nature A. franciscana feed by scraping food, such as algae, of rocks and can be classified as a bottom feeder; with this said, A. franciscana are usually located in shallow waters. In respect to the preference of light intensity, A. franciscana can be hypothesized to respond to light erratically (Fox, 2001; Al Dhaheri and Drew, 2003). Using these predictions, and the results of the experimentation on the A. franciscana and stimuli, we will be able to determine their preference towards light, temperature, and pH.
First, 100 mL of regular deionized water was measured using a 100 mL graduated cylinder. This water was then poured into the styrofoam cup that will be used to gather the hot water later. The water level was then marked using a pen on the inside of the cup. The water was then dumped out, and the cup was dried. Next, 100 mL of regular deionized water was measured using a 100 mL graduated cylinder, and the fish tank thermometer was placed in the water. Once the temperature was stabilizing in the graduated cylinder, the marked styrofoam cup was filled to the mark with hot water. Quickly, the temperature of the regular water was recorded immediately before it was poured into the styrofoam cup. The regular/hot water was mixed for a couple seconds, and the fish tank thermometer was then submerged into the water. After approximately 30 seconds, the temperature of the mixture leveled out, and was recorded. This was repeated three
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Paragraph 2: It is believed that as the temperature of the water increases the time it will take for the tablet to dissolve will decrease. This is believed since the temperature there will be more energy allowing the particles to get together and form a reaction allowing the ta...
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