* What adaptations allow them to live and eat in the water (hint: know about their physical body part changes that are different than their land ancestors)?…
In this experiment we are trying to test whether or not we could keep aquatic fauna and plant fauna alive using decomposition for the main source of nutrients and food. The idea was to see if we could produce enough nutrients without creating a lot of turbidity. This research stands very important in the natural environmental world because it gives us a good understanding on the ways of survival and what can harm an eco-system.…
Chemosensory organs in many crustaceans including Hyalella azteca allow them to locate food and mates while entirely avoiding predators. When detecting environmental changes such as the change in chemicals such as salinity, many amphipods have tiny hair-like organs containing sensory cells called sensilla (Hallberg, 2011). These chemosensory olfactory receptors are virtually found on many parts of the crustacean body including antennae, mouthparts and tips of the walking appendages (Hallberg, 2011).…
From my Blast results the most similar gene sequence to the gene of interest was taeniopugia guttata that had a max score of 2313 and an Ident % of 100. As well as it had an e-value of 0, which means that it’s closely related to the gene of interest. This species is located on the birds’ branch on the cladogram because it has features of a bird. From my data collected of Gene sequence the second most related gene sequence was from meleagris gallopavo . It had amax score of 1781 and an 92% Ident and an e-value of 0.…
Prezygotic barriers impede mating between species or hinder the fertilization of ova if members of different species attempt to mate.…
The Daphniidae daphnia is a freshwater crustacean from the branchiopod class that is common to most ponds, lakes, pools, streams and springs around the world. The water flea, as it is sometimes referred to, is very small in size growing to a length of less than ¼ inch, it has a flat back, a rounded belly, black round eyes and a pair of antennae (Kindersley, 2006). The Daphnia have leaf-like appendages used in respiration, filter feeding and locomotion (Miller, 2010). Unfortunately, due to the size of these crustaceans they are often easy prey for bigger organisms in their ecosystem. Daphnia are often found in the bottom layers of the water column during the day and the upper layer at night to avoid visually feeding fish (Dawidowicz, 1992).…
All animals try to adapt to the environment to survive. The real question is why do living organisms react to environmental factors? For example, a chameleon will change colors to hide from predators. Bears hibernate in the winter to conserve energy because of the food shortages. Likewise, pill bugs avoid light and try to make homes in dark, damp environments and eat decaying plant and animal matter. The reason pill bugs prefer dark and damp environments is because they behave negatively to phototaxis, which is the response to light, and have a partially positive behavior towards hydrotaxis, which is the response to moisture. The reason I say partial behavior is because they do not prefer to live in an all-dry habitat, but they also do not find large bodies of water an ideal habitat as well. In this specific scenario, the object of the…
This hands-on laboratory exercise is a highly simplified model that attempts to simulate evolution by means of natural selection. Predators will act as agents of selection on their prey, a species whose members vary in color. We will assume that color is an inherited trait. Small squares of paper will represent the prey, which will be spread out of a piece of printed colored fabric that will serve as the habitat. The predators (you) will prey upon the population, with the surviving members reproducing and passing along the genes for color.…
-The organism depends on its ability to sense and respond. The organisms could compete for water or hydration.…
Biologists over the years have observed that some species evolve in response to the changes in another. These changes can occur in different levels and in different intensities. Some species exhibit molecular changes such as the structures of macromolecules like proteins or lipids, while others show morphological and behavioural changes in the presence of other organisms. Some evolutionary changes that happen in a species can be a change that is most especially directed towards its adaptation in its relationship with another organism. This evolution that happens in response to the changes in the biotic factors of the ecosystem is called co-evolution. The habits or changes in one organism in an ecological relationship create a pressure that drives changes to another. Therefore, evolutionary changes in organisms due to changes in temperature, water and other abiotic factors are not co-evolution, even if changes happen simultaneously in organisms that are in a specific ecological relationship.…
This surrounding presents feeding challenges because not too many organisms can live under these conditions. In order to increase their chances of survival, they have adapted in eating a multitude of different sustenance. This shows a direct effect in how ecology plays a role in their feeding behavior.…
Over long periods of time, newer and better adapted species gradually replace older ones, which become extinct. All species are modified, creating increasingly complex and developed organisms that form new species which are connect to their ancestors through intermediate species. Darwin cannot fully explain what unfavorable conditions cause species to go extinct, but this extinction is definitely a result of the struggle for existence, as well as a necessary part of natural selection. The fiercest competition is usually between similar species, resulting in the eventual extinction of one of them, after which it is improbable that another similar species would come into existence. Darwin also argues that although natural selection does not act on ecosystems, it is possible for species around the world to change at the same time. “Parallel succession” is supported by geological evidence of similar fossils of the same period found in similar limestone formations in different places. However, later changes in these species’ behavior or environment can lead to further natural selection and formation of new species. Changes in one species can also affect changes in another. Natural selection often results in families of species that have been formed from a single parent species over time, the relationship of which can be determined through fossil records. Related…
There are many ways in which living organisms differ from each other. In this essay I will discuss the various ways of which this occurs.…
The cuttlefish are an amazingly developed animal species with many specialised traits that make them perfectly suited to most, if not all, types of underwater environments. This is the animal this presentation will be looking into. Evolution is commonly described as a theory, However that is a common misconception, all different types of evolution, e.g. Darwinism and Lamarckism, are actually considered both fact and theory. As palaeontologist Stephen Jay Gould says in his 1981 book, ‘Evolution as Fact and Theory’, “A scientific theory is a well-substantiated explanation of facts. The facts of evolution come from observational evidence of current processes…” This presentation will delve into the world of the cuttlefish and elaborate how it aligns with Darwinism/Lamarckism.…
The simulation when all predators were present. The reason is because when predators, specifically starfish, are present the mussel population along with populations of all the rest are able to be controlled. This results in mussels not taking over using their competitive dominance allowing other prey to thrive so that the other predators can survive and be part of the ecological diversity.…