2/19/2012 08:02:00 PM
alasnews
Photosynthesis
What
is photosynthesis? Photosynthesis is a food-making process that
occurs in green plants. It is the chief function of leaves. The word
photosynthesis means putting together with light. Green plants use
energy from light to combine carbon dioxide and water to make sugar
and other chemical compounds.
How
is the light used in photosynthesis?
The
light used in photosynthesis is absorbed by a green pigment called
chlorophyll. Each food-making cell in a plant leaf contains
chlorophyll in small bodies called chloroplasts. In chloroplast,
light energy causes water drawn form the soil to split into hydrogen
and oxygen.
What
are the steps of photosynthesis process? Let me tell you the process
of photosynthesis, in a series of complicated steps, the hydrogen
combines with carbon dioxide from the air, forming a simple sugar.
Oxygen from the water molecules is given off in the process. From
sugar together with nitrogen, sulphur, and phosporus from the
soil-green plants can make starch, fat, protein, vitamins, and other
complex compounds essential for life. Photosynthesis provides the
chemical energy that is needed to produced these compounds.
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