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Engineering HSC and
IIT-JEE Mains and advanced videos. Today we
are studying chapter Photosynthesis in
that we are studying topic what is
basically photosynthesis when I say
photo it means light or sunlight and
when I say synthesis it means
preparation of food by plants
photosynthesis is the process by which
green plants prepare their food in the
presence of Sun light.
Photosynthesis the process by which
green plants prepare their food in the
presence of sunlight we all eat food and
we eat food as human beings because we
need energy
similarly plants do not get food they
prepare their food and they prepare
their food with the help of the process
for less photosynthesis so how does this
process of photosynthesis basically
works every plant on earth has leaves
and leaves a green in color inside
leaves there is a pigment molecule which
is called as chlorophyll which is green
in colour so inside chlorophyll the
process of photosynthesis or food
preparation takes place the process of
photosynthesis is very simple what
happens is carbon dioxide plus h2o comes
in the presence of sunlight plus
chlorophyll plant food glucose is
prepared and the byproducts are carbon
dioxide plus oxygen
let us now simplify the process there is
a surface of leaf which is green in
color and it will have chlorophyll
obviously whenever sunrays falls on the
leaf what happens is there are small
openings present on the leaf which open
ups and once this small openings called
a stomata open ups Sun grease gets
inside leaves now along with sun rays
which are called as photons the
atmospheric carbon dioxide or co2 also
gets in side leaves so there are two
things that goes inside leaf one is
carbon dioxide or co2 plus your sunlight
alone with that plants absorb
atmospheric oxygen or oxygen or against
the atmospheric water which is present
inside atmosphere so what goes inside
the leaf is carbon dioxide plus h2o
along with that your sunlight in the
presence of carbon dioxide plus h2o
along with your sunlight or photons the
chlorophyll of the leaf prepares it
food and the food is glucose c6h12o6 now
there are certain byproducts that
approach
produced in the process of
photosynthesis and this byproducts are
oxygen plus water so how does equation
of photosynthesis balance life we human
beings give up carbon dioxide which
plans taken and plants give up oxygen
which we taking the equation of
photosynthesis which we have studied
takes place in day time there is a
separate equation that takes place at
night time so photosynthesis can be
called as a physio chemical process by
assay physicochemical because there are
certain chemicals also involved in the
presence of photosynthesis when
photosynthesis happens at night there's
a chemical lattice and mode which is
called as rubp
or Rubisco spy phosphate when animals or
certain organisms do the process of
photosynthesis it is a different form of
photosynthesis which is for less
chemosynthesis preparation of food with
the help of chemicals so there are two
key points which you all have to
remember first every plant on earth
prepare their own foods with the help of
chlorophyll it is not necessary that
chlorophyll has to be green in color the
color can vary but every plant on earth
is autotroph when I say auto drop it
means prepare their own food
photosynthesis photos mean sunlight and
synthesis is preparation of food the
process by which green plants prepare
their food that is glucose in the
presence of sunlight it is a
physicochemical process a process that
uses sunlight as well as chemicals
the equation of photosynthesis is carbon
dioxide plus h2 carbon dioxide the blank
scared from atmosphere so along with
carbon dioxide plus h2 in the presence
of sunlight the sent energy in the form
of photons chlorophyll a chloroplast
which is present inside leaf of a green
plants to plant prepare their food which
is glucose c6h12o6 and the byproducts
that are obtained are oxygen and water
and this oxygen is step honest by human
beings so this is way balanced is
observed in nature now plants are called
as photo Auto drops and Auto drops means
anybody who can prepare their own food
so plants prepare their own food so they
are termed as photo Auto drops so for
example if somebody prepares their food
with the help of chemicals they will be
called as chemoautotrophs students in
this part of the chapter we started how
plants basically cook therefore uh
prepare their food and the main source
of their food is glucose c6h12o6 I hope
you are clear with the concept of
photosynthesis thank you
