Fellow hypographer in need

[ronthepon]

Now the title may seem a little overblown...

I am preparing a little write up on a little experiment I had done. Remember me asking about photosynthesis?

I need information on:
1- Why is the absorption of purple light so high in leaves?

2- Why is (infra-)red light so less absorbed?

3- Why is green light so less absorbed? Why refected?

and any other information on the reason behind why the action spectrum is like the way it is.

I've attached a little doc. file, and it has info on what I've done. You might consider reading it and helping me out...

PS: This is really big for me, it's gonna be recognised by the big scientists and it must be good! Please take a moment for me...
And I've done tons of googling on this one UncleAl... I swear on my head.

I've got time till the 19th to prepare this write up.

[cockydude]

If you can find this kick-ass textbook called Biology by Neil A Campbell. There is thorough explanation for all the questions, or so i think...
try googling photoexcitation of chlorophyll molecules. MIGHT help. im no expert in this

[ronthepon]

I cannot try seaching for a new book now.

And as I said earlier... I've done my bit of googling.

[ronthepon]

1- Why is the absorption of purple light so high in leaves?

2- Why is (infra-)red light so less absorbed?

3- Why is green light so less absorbed? Why refected?

Does nobody know?

[Michaelangelica]

Originally Posted by ronthepon

1- Why is the absorption of purple light so high in leaves?

Is purple really a primary colour? Isn't it a mixture of red and something?

There are a lot of leaf colours in nature, white,red, green, yellow come readilly to mind

I don't know the answer to your other questions
It would be nice to know how photosythesis really works.
Good luck

[Jay-qu]

I think its the compound chlorophyl that gives it the green colour. Specifically absorbtion of specific wavelengths is due to the energy levels of the valence electrons

[KickAssClown]

It has to do with refraction due to quantizied energy absorbtion.

I've read over your experiment and it's good.

Somethings of note.


Source: Luminary Prospects


If I remember correctly, and I am not having great success at the moment. Rich UV light promotes an increased production of flowers, where as Rich Infrared promotes an increased production of foliage.

I hope that helps some.