why are plants green??????

الكاتب : Rita Alshoaibi   المشاهدات : 559   الردود : 8    ‏2007-09-01
      مشاركة رقم : 1    ‏2007-09-01
  1. Rita Alshoaibi

    Rita Alshoaibi مشرف سابق

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    Plants are green because they have a substance called chlorophyll in them. Understanding why chlorophyll is green requires a little biology, chemistry and physics.

    If we shine white light on chlorophyll, its molecules will absorb certain colors of light. The light that isn’t absorbed is reflected, which is what our eyes see.

    A red apple appears red because the molecule of pigment in the apple’s skin absorbs blue light, not red. Thus, we see red. Chlorophyll molecules absorb blue light and some red light. The other colors are reflected resulting in the green color that we associate with plants.

    Plants get their energy to grow through a process called photosynthesis. Large numbers of chlorophyll molecules acts as the antenna that actually harvest sunlight and start to convert it in to a useful form. Here’s where the absorbent properties of the chlorophyll molecule come into play.

    It turns out that eons of evolutionary design have matched the absorbance of chlorophyll to the actual color of the sunlight that reaches the leaves. Sunlight consists of primarily blue and red light mixed together, which are exactly the colors that chlorophyll molecules like to absorb. Light is a form of energy, so the chlorophyll is able to harvest the sunlight with little waste.
     
  2.   مشاركة رقم : 2    ‏2007-09-05
  3. yemen_samurai

    yemen_samurai عضو متميّز

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    seems u r a biologist
    or in any semilar field
    any way
    thanks for those informations sister
     
  4.   مشاركة رقم : 3    ‏2007-09-05
  5. Rita Alshoaibi

    Rita Alshoaibi مشرف سابق

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    not really but im interested about everything
    thanks for ur nice pass


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  6.   مشاركة رقم : 4    ‏2007-09-05
  7. إبراهيم ناصر

    إبراهيم ناصر مشرف سابق

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    as always
    everyday you learn something new
    thanks for sharing sis
     
  8.   مشاركة رقم : 5    ‏2007-09-05
  9. Rita Alshoaibi

    Rita Alshoaibi مشرف سابق

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    thats right and its more then ok to learn a little about everything
    thx ibrahem for ur nice pass



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  10.   مشاركة رقم : 6    ‏2007-09-05
  11. Bero

    Bero الجهاز الإداري

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    Thank you for this great information........I like it


    Bero
     
  12.   مشاركة رقم : 7    ‏2007-09-07
  13. keep it real

    keep it real قلم ذهبي

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    thanks alot and may allah put us in his green paradise
    on judgement day
     
  14.   مشاركة رقم : 8    ‏2007-09-07
  15. Rita Alshoaibi

    Rita Alshoaibi مشرف سابق

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    thanks BERO
    for passing by - im glad that u liked the informations
    and
    blessed and happy friday to u



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  16.   مشاركة رقم : 9    ‏2007-09-07
  17. Rita Alshoaibi

    Rita Alshoaibi مشرف سابق

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    dee u know i like always
    ur comments
    thanks a lot
    and
    blessed and happy friday to u
    [​IMG]
     

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