What Makes Plants Grow? Several People Have Puzzled Over This Question. There Is

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Term Paper Title	What Makes Plants Grow? Several People Have Puzzled Over This Question. There Is
# of Words	1280
# of Pages (250 words per page double spaced)	5.12

     What makes plants grow?  Several people have puzzled over this question.  There is no one single answer to this.  Several factors contribute:  Tropisms, environment, hormones, biological clocks, and even humans.  We are trying to determine the effects of music on plants.  It takes all these combined to have a plant that actually grows and a plant that is healthy and happy in its habitat.
Hormones
     Hormones contribute greatly to the growth of plants.  Hormones such as auxins, gibberellins, cytokinins, and inhibitors make plants start growing through stimulation, have protein synthesis, maintain growth, and also inhibit plant growth, respectively.  Hormones, very simply, control the plant’s instincts to grow.
     Auxins accumulate in certain parts of the plant, for example the
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stems grow toward the light.  Auxins also make roots grow and make the veins in leaves grow.  Tropisms, which are discussed later, in conjunction with auxins, make the plant grow in the proper direction.
     Gibberellins are the leaves and roots that form in the baby plant seed.  Gibberellins are also responsible for protein synthesis, which is the building of protein for basic life purposes.  Gibberellins are used commercially to promote flowering and fruit development because of their growth stimulation.
     Cytokinins  are a group of natural plant chemicals found in endosperms, the nutritive tissue of embryonic seeds, and in the development of fruit. The cytokinin zeatin, in conjunction with auxins, stimulates cell division, particularly for shoot growth. Cytokinins also maintain cell growth, differentiation, and division.
     Inhibitors are hormones that inhibit plant growth.  Some inhibitors make the plant leaves fall off in the Autumn.  Other inhibitors prevent the formation of buds in cold seasons.  Ethylene makes fruit ripen which inhibits certain plants from maturing fully.
The Environment
     All plants need a fitting place to call home.  This place is called its environment.  Everyone knows that plants need suitable climate, water, and sunlight for photosynthesis in their environment.
      In certain plants, shade is needed for proper growth but some light
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is still needed.  The length of the periods of light a plant receives also affects its growth and flourishment.  Photosynthesis occurs using the suns energy to create the plants own energy.  Long-day plants blossom only during the long periods of sunlight.  Short-day plants bloom when the dark period is long.  There are other ...

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