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Senin, 03 September 2012

CONTOH EXPLANATION TEXT


Topic                             : Plant
Title                               : Photosynthesis Process
Generic stucture             :

·        General statement        :
-         The definition of photosynthesis
-         Such factor which influence photosynthesis
·        Squenced explanation :
-         Water absorb by the root
-         Carbondioxide absorb by the stomata and lentisel
-         Process of photosyntesis in leaf
·        Conclusion                     :   
-         The Usefull of photosynthesis



How Does Photosynthesis Process Happen ?    

Photosynthesis is a syntesis process of food to be an energy source in green plant (a chrolofiled plant). In Biology dictionary, Photosynthesis can be difinite as a process of making food that happen in the leaf, which done by the chlorophyll and helped by the sun light. There are some factors which influence the photosynthesis process, such as : light, chlorophyll, temperature, carbondioxide, and water. Do you know
how does photosynthesis happen ?
Water (HO) and carbondioxide (CO2) are very importent as a raw material during the photosynthesis process. Water can be found in the bottom of the soil by using root of the plant, the root will sperate and enlarge to absorb water around. After that, vaxcular xilem will bring the water from root, into the leaf. At that time also, carbondioxide will absorb from the external air  by the slits, they are stomata and lentisel.
Water and carbondioxide which have absorbed will colect in the palisade tisue and do the photosynthesis process in the leaf. During the photosynthesis they are helped by sun light which find in the green colored pigment (chrolophyll), the sun light will break water molecule into oxigen and hidrogen. In one side the oxigen is released to the external air and at the other side the oxigen is used by plant to breath, meanwhile the hidrogen mix with the carbondioxide and form glucose which distributed by vascular floem into the all body of plant.
So, photosynthesis is an importent process that produce oxigen as an air which used by living things to breath, and glucose as a energy source in plant.   

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