Some of the organisms such as Tesseropora Roseas (Barnacles) and Knobbly Winks have different adaptations, which allow them to survive in these harsh conditions. Competition with other organisms, availability of food and predation can also affect the abundance and distribution of rock-shelf organisms. To determine the abundance and distribution of these rock-shelf organisms a quadrat with an area of 0.5m2 was used. It was placed randomly in each location. Location 1 was above the high tide mark, Location 2 the tidal rock pools and location 3 the low tide mark.
Discussion/ Analysis: Phototaxis was exhibited by the Sow Bugs. This is shown by the higher number of specimen attracted to the darkness versus the lower number of specimen remaining in the light. The results are supportive to the hypothesis where the Sow Bugs exhibited significant phototaxis shown by the change in distance from the stimulus over a period of time. The results of the chemotaxis experiment disprove our hypothesis where the Sow Bugs did exhibit chemotaxis and reacted to the chemical stimulus. There are several factors that could attribute to a data differential throughout the experiment.
Problem: What are the internal and external structures of a sea star? Hypothesis: I will examine the external and internal characteristics of a sea star. Since they are members of the phylum Echinodermata, they may have tough outer surfaces with spines. Their internal systems may consists of a mouth, stomach, digestive glands, and an anus. Materials: - preserved sea star - plastic gloves - dissecting pan - scalpel - dissecting scissors - dissecting probe - lab apron - eye goggles Procedures: Part A: 1.
This is a random turning point or movement of an animal in relation to stimulus. For example, an organism responds to bright light by moving away. In this case the bill bug responds to the wet paper towel by moving away from it and going to a terrain where it is feels safe. If anybody is thinking about trying this experiment I have a few recommendations for them. I suggest using more pill bugs than we used maybe use around 10 pill bugs to come up with more accurate data.
It has red or orange antennae, lacks hair, and its claws seem rough or grainy. This hermit crab will pick a shell it can pull its entire body back into. I saw both P. hirsutiusculus and P. granosimanus in the same tidepool at Rosario recently. A third species to watch for is Pagurus beringanus. This species is usually subtidal but may occasionally be seen in very low subtidal areas.
In most annelids, the body temperature of the worm will change with the environment. When the temperature is low, the metabolism of the worm is reduced. The worm will move more slowly and act sluggish (VanCleave). The presence of certain chemicals affects the worms in different ways. Nicotine will make the worms go unconscious in under a minute and stay that way for several more minutes (Bely, 2009).
5. List at least three types of bacteria whose names reflect their shapes and arrangements, and state the meaning of each name. Streptococcus (Coccus Shape) this is a spherical bacteria that causes Strep Throat. Lactobacillus (Bacillus Shape) this is a bacteria in the form of a rod that is usually in probiotics Spirillum Pulli (Spirillum Shape) this is a spiral bacteria in rat bite fever Exercise 3: Gram stain 1. What is the function of the iodine solution in the Gram stain?
The Red Imported Fire Ants, Solenopsis invicta, are being successfully outcompeted and even displaced by the crazy ants (Gotzek et al., 2012). These crazy ants possess a threat to the fire ant community with the possibility of eventually forcing
The vinegar removes these minerals, and the shell becomes soft, allowing the egg to bounce without breaking the shell. The eggshell is made from calcium carbonate. When the egg is subjected to prolonged exposure of the vinegar [an acetic acid], the vinegar reacts with the calcium carbonate of the shell by breaking it into calcium, and carbon dioxide gas, eroding the shell. The eggshell is thin, brittle (easily breaks), has an exterior covering of an egg. By the time the egg is done you will see egg yolk sloshing around as you shake it (rub the egg gently to see the yolk but don’t rub too hard or it will pop).
The mucous tube insulates and prevents the glow worm from dehydration. At night inside the tube it moves back and forth breaking through the tube to repair its web or to feed on trapped insects. During the day the glow worm hides inside its safety haven to avoid daylight predators. Ironically the glow worm is not actually a worm but a larvae. Early settlers from the British Isles applied the common name 'glow worm' as a substitute for the English glow worm Lampyris noctiluca, which was actually a beetle.