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Discuss the importance of plants on planet earth

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Introduction

Discuss the importance of plants on planet earth Plants As We See Them Plants are all around us, renowned for their aesthetic appeal; their colours and structures lend themselves to decoration. Plants are used in celebrations and commiseration's and are often celebrated in their own right- the annual Michigan potato festival being a good example. Plants are associated with national identity. The Scottish thistle; Irish Shamrock; Welsh leeks and daffodils. Many national flags feature plants, the Cedar tree on the Lebanese flag, and the Maple leaf on the Canadian flag. However all of these commendations can not begin to celebrate the real importance of plants on planet earth. In this essay I will explore the biological and physical importance of plants and the issues surrounding them. ...read more.

Middle

In the light reaction energy is converted into ATP and NADPH. Water, obtained through the roots and stem of the plant, is split, and as a by-product, Oxygen in released. This 'by-product' has a major impact on the bioshpere. Today's atmosphere would not have 21% oxygen if it were not for photosynthesis. The Dark Reaction Also found in the chloroplasts is a fluid filled region called the stroma. This structure contains most of the enzymes needed for the light independent or dark reaction, the process that converts Carbon Dioxide to Glucose. The dark reaction depends on the ATP and NADPH obtained from the light reaction. Carbon dioxide obtained by the plant from the atmosphere through the stomata in the leaves, bonds with Hydrogen and Oxygen from the water and from the atmosphere to form carbohydrates in the form of glucose (C6H12O6+6O2). ...read more.

Conclusion

The vast majority of our fruit and vegetables are grown on a farm somewhere in the world. The ability to grow and control the growth of plants is essential, particularly to those in the third world who may have no other source of income or indeed, food. Controversial Plants Genetic Modification is a phrase that strikes fear in to the hearts of 'environmentalists' and Liberal Democrats alike. Genetic modification of plants took place in its very simplest form even before Gregor Mendel started tinkering with Peas in 1857. Perhaps this is the way forward? Better disease resistance, larger crop yields anti-carcinogenic carrots; these are all good things. I certainly look forward to slice-of- bread shaped tomatoes. In the future perhaps technology and botany can combine in perfect harmony, if it is wise to do so. ...read more.

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