• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

When one species influences another species evolutionary development it is known as Coevolution

Extracts from this document...


´╗┐Coevolution Essay Corey Diamond Period 1 12/6/11 When one species influences another species? evolutionary development it is known as Coevolution. Coevolution is a mutually beneficial relationship between two species that enable their survival as a species or as an individual organism. The theory of coevolution was first conceived by Charles Darwin who observed a symbiotic relationship between the insects and flowers on his farm. Darwin discerned that the physical discrepancies of flowers could not have come about through self-pollination, but could have only been attained through pollination from other plants. In order to justify his theory that plants evolved and reproduced through the pollen of other plants, he explained that insects played a role in the conveyance of pollen. Darwin explained that when insects trekked to a flower for its nectar, pollen from the flower would fasten to the insects and be transported to another flower when that particular insect disembarked on it. In this way, the flower depended on the insect for reproduction and the insect depended on the flower for food. ...read more.


The ants fiercely defend the tree against ravaging insects, browsing mammals and epiphytic vines and in return, the Bullhorn Acacia supplies the Stinging Ants with protein-lipid Beltian bodies from its leaflet tips and carbohydrate-rich nectar from glands on its leaf stalk. (In this example, both the Bullhorn Acacia and the Stinging ants benefit from each other. The co-evolutionary relationship that the acacia and the ants share is called a mutual relationship where both species benefit.) Here it can be seen that the Bullhorn Acacia has evolved in a way that supplies the Stinging Ants with food. It can be assumed that Bullhorn Acacias that could produce protein-lipid Beltian and nectar more efficiently were more capable at surviving because of the Ants that occupied the Acacia for the protein and nectar. At the same time, the Stinging Ants can survive because of the sustenance they attain from the Acacia. Another example of coevolution can be seen in the relationship between the Australian Hammer Orchid and the Thynnid Wasp in Australia. ...read more.


In the process, the wasp transfers pollen from flower to flower. (In this example, the relationship is only beneficial to the Orchid, while wasp receives no benefits. This type of co-evolutionary relationship is called a commensal relationship where one organism benefits but the other does not). It can be seen that the Hammer Orchid evolved in a way in which it took advantage of the mating rituals of the Thynnid Wasps and thus was capable of surviving. In conclusion, the relationship between two species of organisms can have a drastic impact on the way they develop and spread. The symbiotic relationship that two organisms share change and alter them in a way that helps them survive and flourish. Those organisms that do not possess the necessary traits that help them survive die out while the ones with the beneficial traits survive. At the same time, the organisms that survive influence and stimulate the change of the organisms that depend on them and, in turn, influence the evolution of the dependent organism. Coevolution can be beneficial to both parties of organisms or beneficial to only one party of organism. However, the influence that the organisms share with each other indirectly changes stimulates the evolution of the species. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Biology essays

  1. extended essay

    Asexual reproduction has been first discovered in the organisms found in certain plants. Recently, however, it had been proved that it is not possible to create this form of asexual formation on more complex animals. With the development of nuclear transplantation, a new form of asexual reproduction has been formed.

  2. cell theory summary

    One of the classic examples cited is to think of the emergent properties of water (fluidity) that cannot be predicted from knowledge of the constituent gases hydrogen and oxygen. On a biological scale consider the current debate about the nature of human consciousness or the origin of life itself.

  1. Allelopathy. Open Investigation Will increasing the number of allelopathic sunflower plants effect the ...

    seeds Dependent variables - Height of plants from the surface level of the soil up to the tip of the stem (mm) Aspect 2 Table 1.1: List of all the variables that will be controlled in this experiment and explanations and method of how the variables will be controlled.

  2. Bilharzia. Schistosomiasis, commonly known as snail fever, bilharzia and bilharziasis, is a disease ...

    Each species of schistosome cause slightly different symptoms, depending on the kind worm involved and the location of the parasite inside the body, but all of them severely damage the liver and other organs. The incubation period is typically 14-84 days for acute schistosomiasis.

  1. Measuring the diversity of plant species in an area.

    Starting from the bottom left corner, measure out the first numbers the generator came up with for width and height and find that point of intersection. (For example, getting 14 and 2 would result in the area of the quadrat sampling being 14 units up, 2 units left)

  2. A Local Ecosystem, Patterns in Nature,Life on Earth,The Australian Biota ...

    In mutualism, both organisms benefit from the relationship. Lichen is an example of a close mutualistic relationship between an alga and a fungus. The alga produces food through the process of photosynthesis. The fungus provides a place for the alga to live.

  1. Genes of fruit fly practical write up

    over half at 0.5153 this is the minimum value that the level of significance can be while still supporting the hypothesis. This is because when the level of significance is multiplied by 100 it gives the percentage probability of the hypothesis actually happening.

  2. Biology Internal Assessment - investigate whether the Window and Notching caterpillar share the same ...

    As pesticides work in different ways one species of the caterpillar may have been better adapted to cope and therefore survive while the other died. This would have led to a larger population of the better adapted caterpillar, which would present more competition, and therefore their feeding sites of the

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work