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Biology CourseworkTo determine if the distribution of flora across Ellerbeck is due to chance. The valley containing Eller beck possesses a huge variety of different species of plant life, particular species are often found in specific places

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Introduction

Biology Coursework To determine if the distribution of flora across Ellerbeck is due to chance. The valley containing Eller beck possesses a huge variety of different species of plant life, particular species are often found in specific places across the valley, to find out why these particular plants grow in the particular places I mean to investigate where different species of plants are located and what the conditions in those particular places are, investigating the effects of several factors on the distribution of these different species across a specific area of the valley. I believe that the varied distribution of the different species investigated is directly related to, and can be explained by the differences in the factors I will be measuring, that certain plants will grow in certain places in the area because they are more suitably adapted, in whatever way to the conditions in that specific place. This is a rough diagram of Ellerbeck. I plan to perform my investigation using two information gathering techniques, after first establishing a straight line across the valley by taking a bearing using a compass from one point at the top of the South side of the valley and following that bearing down the valley, across the beck and up the other side whilst performing both a line transect and an interrupted belt transect. I also plan to perform an interrupted belt transect along the same bearing. ...read more.

Middle

This is because the biological processes for nutrient transformations and nutrient availability are heavily influenced by soil temperature. Soil temperature has a profound influence on seed germination, root and shoot growth, and nutrient uptake and crop growth. Seeds do not germinate below or above a certain range of temperature. Water helps plants in transpiration where 99% of the water entering the plant through the roots leaves as water vapour via the stomata on the leaves, this allows the plant to lose the heat that its reactions produce. Water is needed for photosynthesis, (the essential process in which plants convert light energy into chemical energy in the form of organic molecules, some of which also serve as building blocks for plant structure) the photolysis of water in the light dependent reaction of photosynthesis provides electrons to replace those that have left the chlorophyll of a plant cell due to them having gained energy from light, it also releases H+ ions which are used at the end of the carrier chain where they are reunited with electrons which reduce the coenzyme NADP to form NADPH. Water is essential to the growth of a plant; it is used in a variety of different functions throughout plant growth and in many of the different processes that occur inside a plant. All chemical reactions require water as a solvent. A water solution is required for the transport of nutrients from the root through the plant. ...read more.

Conclusion

I will lay the quadrat frame on the ground, to ensure a fair test I will always lay it on the same side of the tape and with the same corner, ie. Bottom right touching the same value ie. 10m, 20m to ensure each quadrat is the same distance away from the last exactly. I will then measure a certain distance down one side then lay the ruler straight across the quadrat, placing the pin into the ground at 10 centimetre intervals along the ruler recording which species of plant the pin touches. It is likely that in the quadrat frame there may be different species of plant on top of each other, therefore to ensure each quadrat receives the same treatment I will decide now to record the first plant the pin touches. I will record the results in a suitable diagram that will also illustrate the distribution of different species visually. I will perform a statistical analysis such as the Chi squared test on my results to test the statistical significance of results reported in my tables of results. While I am following my bearing across the valley I will also be making a height profile of the area using a clinometer at each ranging pole and measuring from a specific point on one, to the next along to see by how many degrees the valley slopes down, and up on the other side. ?? ?? ?? ?? S.McConville ...read more.

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Here's what a teacher thought of this essay

5 star(s)

*****
Excellent experimental procedure.

The theory supporting the prediction is accurate and relevant.

The introduction needs some improvement:

1. Sentences are too long, often for whole paragraphs. They need to be shorter and more to the point.
2. Introduce the study and the area more clearly. It is not clear what Ellerbeck is, there is no mention of it being a village.

Marked by teacher Jon Borrell 08/01/2013

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