Competition And Predation Play An Important Role

Survival of organisms depends on adaptive behavior and species interactions. Taxis is less or more automatic movement towards or away from a stimulus or direct movement. An example of taxis is when a plant is put by a windowsill. The plant grows towards the light. Another example is when stream fish automatically swim upward in the upstream direction. This example is considered positive taxis. This type of taxis allows the fish to swim in the direction of food and allows them to not be swept away.

Commensalism is when one species can benefit from a relationship and not hurt the other. There are four different main types; chemical, inquilinism, metabiosis and phoresy. Chemical commensalism is most often observed between bacteria. It involves the species of one bacteria feeding on the chemicals produced or the waste products of the other bacteria. Inquilinism involves one species using the body of another organism as a platform or living space while the host does not benefit or is harmed. Metabiosis occurs when one species unintentionally creates a home for another species through one of its normal life activities. A phoresy takes place when one organism attaches to another organism specifically for the purpose of gaining transportation. An example of commensalism (inquilinism) is barnacles and whales. Barnacles are non-moving and they rely on currents to bring them food. Some barnacles attach themselves to whales in order to help them live. They can benefit as they are then transported over the ocean which exposes them to more feeding oppurtunities. The whale neither benefits or is harmed by the barnacles.

Ecology is how organisms interact with each other and the environment. The Lion King is linked to ecology by showing how organisms interact with each other and the environment. My three topics are how symbiotic relationships are important to a community, how limiting factors affect a community, how communities respond to abiotic or biotic factors, and how this is linked to the movie and Ecology. Symbiotic Relationships are interactions between two species and how they affect each other. There are three different types of symbiotic relationships Mutualism, Commensalism, and Parasitism.

There are three forms of symbiotic relationships namely mutualism, commensalism and parasitism. The partners in a symbiotic relationship may either benefit from, be unaffected by, or be harmed by the kind of relationship that exists between them, (Berg 2007). Mutualism is a symbiotic relationship in which both the partners benefit from the relationship, (Berg 2007). Commensalism is a symbiotic relationship whereby one party benefits while the other party is neither harmed nor benefits, (Berg 2007). Parasitism is a symbiotic relationship in which one party benefits while the other is harmed, (Berg 2007).

In all symbiotic relationships, one of the species involved in benefited. In Mutualism, both are benefited, in Parasitism one is harmed by the other’s gain, is commensalism one is not affected by the other’s gain. In a Cooperative relationship, both are working together to achieve a common goal. In Predation, one organism is preyed upon by another, who will most likely use the organism for food.

In this lab, we examined protist survival in different communities. An biological community is a community where two or more species coexist in

When all four species were biologically identical, it was impossible to correctly predict which species would survive competition but when one or two species were given an advantage you could predict which species would survive the longest.

A keystone species has a high impact on a community by keeping an ecosystem together. Most often Beavers, Bears, and Bees are just a couple of keystone species.

Directional selection and disruptive selection differ because instead of the subject only going in one direction it will split off and go two different ways for example if some flowers and their colors. The main colors may be red, pink and white primarily, and the more dominate color being a pink flower. But if we remove the pink flower completely from the equation then the flowers will shift toward the dominant white color over the red. In a directional selection there is only one trait and it is always that dominant trait that dictates body of the population. The best example to show this is that in the

Predatory selection demonstrated heavily on how the predators prefered brighter males and how females then resorted to whatever was left. From my data of mostly drab and mostly bright guppies with the simulation having 30 rivulus, 30 acara, and 30 cichlids, I could see a clear trend. For the mostly drab guppies, in a mere 7 generations or 141 weeks, showed that the predators had wiped out the brighter guppies having a split demographic of 0% of the brightest and bright guppies, 30% for drab guppies and 70% for the drabbest of guppies. In the mostly bright guppy test, it was more even but showed an obvious lean towards the drabber guppies having 20% and 17% for brightest and bright guppies, and 17% and 46% for the drab and drabbest guppies respectively. With all this data, the trend leaned towards having the bright guppies

Analyses how these factors brought regnum and sacerdotium into direct and somewhat inevitable conflict and competition with one another.

Climate change is the increase in temperature of the Earth and its atmosphere. This has a huge effect on the world including Canadian ecosystem. Humans have added to this effect due to their irresponsible use of fossil fuels and polluting the environment increasing the amount of green house gases in the atmosphere. One of the results of climate change is ocean acidification, this occurs from the ocean absorbing the carbon from the atmosphere reacting with the water and forming carbonic acid. There are many different experiments done by multiple scientist exploring the effect that ocean acidification has on the environment and the species that live in it, specifically the predatory prey cycle. There was a study done by Elise A. Keppel et al.

The purpose of the paramecium experiment was to observe competition or allelopathy between two different species of paramecium in the laboratory. Allelopathy is a way organisms inhibit or affect other organisms when developing in nature. This insures the survival of one organism against another organism. For instance in plants, some can release a chemical that enters the environment and inhibits the growth and development of surrounding plants. Another example in nature is plants developing defenses to prevent herbivores from eating them. This kind of competition happens in nature when the need for resources is limited and survival is necessary. Competition is displayed throughout nature all the time. A man named Georgy Gause previously conducted this experiment between P. aurelia and P. caudatum. He determined that different factors influence how the two species compete and coexist. Ever since then not many scientist have attempted to experiment on paramecium. Only until recently have more experiments been attempted. The issue with the experiment was that it was conducted in 1935 and nowadays there are more advance ways to conduct and interpret the experiment and results.

Eukaryotes come in two grades of organization: single-celled (protists) and multicellular (plants, animals, and fungi). The world today is full of complex multicellular plants and animals: how, why, and when did they evolve from protists?

Analyse the pecking order and the trade-off theories of capital structure and assess the extent to which these are supported by the empirical evidence.