Plant evolution.

[Zenn]

Hi,
I was just wondering if anyone new why plants have not evolved to use the energetic ultra-violet wavelengths of light in photosynthesis. I would really appreciate a quick response.
Thanks,
Zenn.

[mith]

blocked by the ozone layer?

[victor]

I think it's because their chlorophyll are for red (chlorophyll a) and green-blue (chlorophyll b). Beside, ultra-violet wavelength is much more shorter than those two and again, ultra-violet ray is harmful because of its radiation that can cause mutation of cells.

[Zenn]

Thank you so much guys,
You are the BEST! I appreciate your help so much.
Jonny.

[victor]

For further information, please search for yourself in google or yahoo since the info above is not the detail one.
Cheers,
/ 'vikte /

[MrMistery]

As victor said, it has to do with the molecular properties of the chlorophile molecule. Plus, ultraviolet is only 9% of the light, and most of it is blocked by the ozone layer, so such an evolutionary step would be pointless

[victor]

Ozone layer is 'bleeding' now because many use of CHCl3 (chloroform), freon, etc....so, I think it'd be possible now...
Hey Andrew, since this post is shown, I saw your total posts and the number is exactly the same with my country's independence year (1945)... congrats..

[MrMistery]

Even with the use of cloroflorocarbs, the ozone layer only bleeds where the temperature in the upper stratosphere is low enough. if the uv light gets through, there will be no more plants.
PS: I have more posts than your indepence year, victor

[victor]

Well, just hope that "thrombocytes" will prevent the "bleeding"..
Hey, I've ever heard this theory but why they don't have it applied in life?
now, world can make O2 by electrolysis of H2O. then this O2 can be made into O3 (ozon) trough process called electrical bow process (IMMSMR).
so: O2 ---electric bow--> O3

This O3 can be released to the stratosphere, but, why they don't do it???

[canalon]

Well, just hope that "thrombocytes" will prevent the "bleeding"..
Hey, I've ever heard this theory but why they don't have it applied in life?
now, world can make O2 by electrolysis of H2O. then this O2 can be made into O3 (ozon) trough process called electrical bow process (IMMSMR).
so: O2 ---electric bow--> O3

This O3 can be released to the stratosphere, but, why they don't do it???

1- Atmospheric ozone is toxic. It is a pollutant.
2- Production of O3 this way cost a lot of energy, that won't help with global warming
3- It is not exactly easy to send enough O3 in the stratosphere you know... They a re talking about billion tons of the stuff that you would have to send a few kilometers above where you are making it. Needs a lot of pipes

Patrick

[victor]

...I think they will do anything to prevent that...now it's proven that I was wrong.. ..I think they can use space cargo to deliver it...

[MrMistery]

Space cargo? You mean to send it via a space shuttle? That is absurd... Or it sounds so anyway...