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Reply #14: Yes that is all well and good but why green and not black or brown? [View All]

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Winterblues Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Apr-03-09 10:34 AM
Response to Reply #8
14. Yes that is all well and good but why green and not black or brown?
Why did photosythesis require the color to be green. Is it because it absorbs better from the sun and if it is ..why?
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  -What color absorbs more light and heat, black or green? Winterblues  Apr-03-09 10:18 AM   #0 
  - Because sunlight is not pure white.  Occam Bandage   Apr-03-09 10:19 AM   #1 
  - White reflects sunlight but black absorbs it.  Winterblues   Apr-03-09 10:20 AM   #2 
     - Right. Black is the absorption of all wavelengths.  Occam Bandage   Apr-03-09 10:22 AM   #6 
        - Although I've certainly seen plants that have almost black leaves.  tridim   Apr-03-09 10:25 AM   # 
        - And poinsettia leaves turn red around xmas time, IIRC. n/t  Ian David   Apr-03-09 11:32 AM   #28 
        - but the solar spectrum peaks in the green  Bill McBlueState   Apr-03-09 10:33 AM   #13 
  - Plants don't need heat. Heat is infrared. Photosynthesis requires ultraviolet. n/t  Ian David   Apr-03-09 10:20 AM   #3 
  - Why is it then most plants quit growing under forty degrees?  Winterblues   Apr-03-09 10:21 AM   #4 
     - Not all plants. There are algaes that live in the ice.  Ian David   Apr-03-09 10:22 AM   #5 
        - Interestingly, one could observe that if chlorophyll were white then plant life could not have ..  TahitiNut   Apr-03-09 10:29 AM   #11 
        - For a recent in depth discussion of what plants might be like on other worlds under other stars  csziggy   Apr-03-09 04:48 PM   #40 
  - Most plants reflect green and absorb red yellow blue and uv  tridim   Apr-03-09 10:22 AM   #7 
  - did you forget EVRYTHING you learned in grade school!  marketcrazy1   Apr-03-09 10:23 AM   #8 
  - That does not answer the question, which is "why did plants not evolve  Occam Bandage   Apr-03-09 10:25 AM   #9 
  - Why didn't you evolve to photosynthesize?  Ian David   Apr-03-09 10:26 AM   #10 
  - Because I live in a cave.  TahitiNut   Apr-03-09 10:31 AM   #12 
  - hooray for green ray frightened cave dwellers!!  Soylent Brice   Apr-03-09 11:34 AM   #30 
  - Because high oxygen levels interfere with photosynthesis,  Occam Bandage   Apr-03-09 10:34 AM   #15 
  - Hey, no sex threads. n/t  Ian David   Apr-03-09 10:41 AM   #18 
  - Wait! Who says we don't do anything else with sunlight? It affects our moods and hormones  KittyWampus   Apr-03-09 11:21 AM   #24 
  - My point is that your body expends more effort defending itself from sunlight...  Ian David   Apr-03-09 11:29 AM   #26 
     - ah, but sweating our precious bodily fluids helps rid ourselves of toxins  KittyWampus   Apr-03-09 11:32 AM   #29 
        - Why are you so intent on robbing me of my precious bodily fluids?  Ian David   Apr-03-09 11:59 AM   #34 
           - I just like arguing with you. It gets my blood up  KittyWampus   Apr-03-09 12:01 PM   #35 
              - Did you want the five-minute argument, or the course of ten? n/t  Ian David   Apr-03-09 12:06 PM   #36 
  - Especially true if you pour on mainstream sunscreen  kimmerspixelated   Apr-03-09 05:05 PM   #43 
  - that was not the question  marketcrazy1   Apr-03-09 10:42 AM   #20 
  - the Goldilocks effect? Blue chlorophyll reflects too much and Red too little but Green is just right  KittyWampus   Apr-03-09 11:24 AM   #25 
  - See my post above about the Scientific American article  csziggy   Apr-03-09 04:53 PM   #42 
  - Because the various possible photochemical reactions are all tuned to particular wavelengths of...  Tesha   Apr-03-09 12:28 PM   #37 
  - Yes that is all well and good but why green and not black or brown?  Winterblues   Apr-03-09 10:34 AM   #14 
     - Answer here  cbc5g   Apr-03-09 10:39 AM   #17 
  - Green is a whole lot prettier than black.  Richard D   Apr-03-09 10:37 AM   #16 
  - Green - because green is my favorite color and Jesus loves me, so its green.  ThomWV   Apr-03-09 10:41 AM   #19 
  - Ramen. n/t  ColbertWatcher   Apr-03-09 04:50 PM   #41 
  - Wait a minute!  kimmerspixelated   Apr-03-09 05:07 PM   #44 
  - great question!  KittyWampus   Apr-03-09 10:44 AM   #21 
  - they'd fry if they were black (maybe)  soothsayer   Apr-03-09 10:51 AM   #22 
  - Vegetation isn't green to absorb sunlight but to use it  Warpy   Apr-03-09 10:58 AM   #23 
  - you just made me think- some plants (Orchids) DO essentiall "use" the colors they reflect.  KittyWampus   Apr-03-09 11:29 AM   #27 
  - Because God Didn't Think Black Vegetation Would Look Good.....nt  global1   Apr-03-09 11:41 AM   #31 
  - The sun is green. To you it looks white because your species evolved here on earth.  hunter   Apr-03-09 11:49 AM   #32 
  - Because It Works. The Answer Just IS That Simple.  OPERATIONMINDCRIME   Apr-03-09 11:51 AM   #33 
  - Because absorbing all light would be expensive,  Igel   Apr-03-09 03:10 PM   #38 
  - I think of it this way: the plant doesn't need any more energy.  hunter   Apr-03-09 04:41 PM   #39 
  - Ah - You see the green because they REFLECT it.  NutmegYankee   Apr-03-09 05:32 PM   #45 

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