Green leaves tree and old non leaves tree what did they talks about
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Most deciduous trees are programmed to drop their leaves each fall in a carefully orchestrated sequence of events. First is the color change, caused by the death of the chlorophyll in the leaves.
Chlorophyll, if you remember your high school science, is the material in the plant that produces the food for the plant as well as leaves’ green color. It absorbs sunlight as energy, which is used to convert the carbon dioxide in the air and water into a usable food.
As the amount and intensity of the sunlight decreases, the chlorophyll breaks down. This makes it possible to see the other pigments in the leaves — carotenes and xanthophyll, and, in some plants, the production of the red pigments, anthocyans.
At the same time, there is another change. At the base of each leaf, a single layer of cells begins to grow across the stem. When completed, it crosses the entire leaf stem and cuts off the food stream to each leaf. This causes the leaves to die and eventually fall.
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I hope it helps you
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Chlorophyll, if you remember your high school science, is the material in the plant that produces the food for the plant as well as leaves’ green color. It absorbs sunlight as energy, which is used to convert the carbon dioxide in the air and water into a usable food.
As the amount and intensity of the sunlight decreases, the chlorophyll breaks down. This makes it possible to see the other pigments in the leaves — carotenes and xanthophyll, and, in some plants, the production of the red pigments, anthocyans.
At the same time, there is another change. At the base of each leaf, a single layer of cells begins to grow across the stem. When completed, it crosses the entire leaf stem and cuts off the food stream to each leaf. This causes the leaves to die and eventually fall.
________________________
__________________________
I hope it helps you
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