Why the colourof leave changes to yellow from green?

Question

Why the colourof leave changes to yellow from green?

Answer 1

well....why does ur face gets dull as ya grow old???

its da same wid leaves!!!!!!!!

Answer 2

If I'm not mistaken the leaves already are the different colors that you see in the Fall.  We don't see these colors because of all the chlorophyll in the leaves, which we see as 'green'.  During the trees life cycle the amount of chlorophyll dissapates and reveals the true color of the leaf, this happens in the Fall.  I could be mistaken....but it sounds good.

Answer 3

It has to do with their Chlorophyll. But I'm not going to go into detail.

This site however, has some good information.

http://www.na.fs.fed.us/Spfo/pubs/misc/l...

enjoy. (:

Answer 4

the play of plastids!

CHLOROPLAST replaces CHROMOPLAST  

Answer 5

http://www.sciencemadesimple.com/leaves....

Answer 6

Chlorophyll, which gives leaves their basic green color. It is necessary for photosynthesis, the chemical reaction that enables plants to use sunlight to manufacture sugars for their food. Trees in the temperate zones store these sugars for their winter dormant period.  So basically, the tree stores the chlorophyll and doesnt give it to the leaves in the winter, so they dye off