Is it true

[teddysbears]

the leaves on a tree do not turn brown but stop being green???? I am sure I heard it some place. Thanks

[cecilope]

The end of the leaf stalk develops a barrier to chlorophyll being sent in autumn. After the leaf has fallen, you can see a shield shaped scar on the twig where the barrier is. You would be right to say the leaf stops being green. (I think, somebody with more knowledge than an ex primary teacher may confirm!)

[teddysbears]

thank you very much for your answer. You have confirmed what I had heard thank you.