Answer 1:
Yes, plants can use the energy of sunlight
to make sugar and oxygen. The oxygen is a gas
and it gets released into the air.The process is
called photosynthesis. What happens is that
the plant takes in water and carbon dioxide and
converts it with the help of sunlight into sugar
and oxygen. To do this it needs the green plant
pigment called chlorophyll which gives the
leaves of a plant its green color. A pigment is
any substance that absorbs light and it is very
complex. It makes energy molecule out of sun
energy that the plant can then use to form the
carbon bonds to make sugar.
As I mentioned before, the plant needs water
and carbon dioxide to make sugar. Water and carbon
dioxide enter the plant through the cells of the
leaf. Water enters through the roots and is
transported up to the leaves. Carbon dioxide
cannot pass through the waxy layer covering the
leaf but it can enter the leaf through an opening
called stoma (the stoma = Greek for hole).
Likewise, oxygen produced during photosynthesis
can only pass out of the leaf through the opened
stomata.
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