Introduction to Mineral Nutrition Video Lecture - NEET

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nutrition part 1 is brought to you by
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topics to be covered in this lesson our
methods to study the mineral
requirements of a plant essential
mineral elements mechanism of absorption
of elements translocation of solutes
soil as reserve oil of essential
elements and metabolism of nitrogen so
minimum nutrition the term nutrition is
something which you have all already
heard of so what does nutrition the food
we eat when we think of ourselves
nutrition comes into picture when we
talk about okay you should eat
nutritious food so that you stay healthy
so nutrition is all about the food which
we eat so it is not the food exactly the
entire process of intake of food and
utilizing that food to get energy that
is why we often say that if if a person
is fasting if a person is not having
food for a day or two he tends to become
beep because he doesn't have energy that
that is because the food is missing he
is not taking in food so this entire
process is nothing but nutrition now in
a very similar way as we humans need
food we eat food in many different forms
for example many of us eat vegetables we
cook them we make them spicy and we make
them eatable and then eat them some of
us are even non vegetarians who eat meat
fresh egg fish or whatever so there are
many different varieties of food which
we take in now in a very similar way
even plants need nutrition now when I
talk about nutrition you might think
that ok for plant nutrition should be
watered because all we do is we water
the plants
that's what so water alone can make
though make a plant live but that is not
the case of course water is very very
important for the survival of plants but
other than water also there are quite a
number of things or quite a number of
chemical elements or elements whatever
you call it which is also equally
important for the survival of a plant
now the question is where do they get
get these minerals so these are nothing
but minerals and in this lesson we are
going to talk about mineral nutrition so
we are only going to talk about those
elements which are essential for the
survival or growth or sustainance of a
plant now you might wonder so who is
supplying those minerals to the plant
because we are supplying only water and
nothing else so who is applying that and
plants can't move as well so there is it
getting the minerals which it needs
so most of the minerals come from the
soil and that is why you would have seen
that most of the plants will have their
roots deep under the soil so because
that is actually the means from where
they get all the minerals that they need
so this lesson will focus only on the
minerals which are needed by grant we
will see what each of those minerals do
in a plant and how many in how much
quantity of those minerals are required
by a plant so that would be the main
agenda of this lesson and towards the
end we will also talk about the
metabolism of nitrogen in our atmosphere
now we will do that because we will see
that nitrogen is one of the most
important mineral which is required in
large quantities by a plant so now it is
not possible to talk about the
metabolism of each and every mineral so
we will take up nitrogen as it is
something which is very very important
for a plant okay so with this brief
introduction we will see directly what
is plant nutrition so how do we define
one
nutrition it is the process of obtaining
food and utilizing it for growth repair
and metabolism now in a very similar way
you can relate it very well to human
beings to ourselves we all eat food why
do we need food so that we have energy
so what will happen with that energy the
food will help us to grow for example if
you compare a baby which is well-fed if
you feed the baby well with lots of milk
and what a nutritious diet you will see
that the baby grows quite healthy the
baby puts on weight the baby grows back
in a nice way whereas if there is not a
baby who doesn't eat well at all doesn't
eat properly
in fact the diet is very less you will
see that the growth is not that good the
baby tends to be lean and thin it
doesn't it is generally underweight so
growth has is directly proportional to
the amount of food which you take in
however there are a few exceptions for
example genetically some people are
obese so they tend to put on a lot of
weight even though they do not eat much
but otherwise in general you eat food
and that food is utilized inside your
body during the process of digestion the
absorption of the food happens the food
is first broken down into simpler a form
and then that is absorbed in your
intestine and then that is utilized for
different purpose for example for growth
for repair when I say repair some of the
tissues inside the body might get
damaged or some of the tissues might die
so you need replacement for those
tissues so new cells need to come up so
what is that process we discussed in a
previous lesson exactly cell division so
even for cell division you need energy
for energy you need food again when you
talk about metabolism you talk you are
basically talking about all the
processes which take place inside the
body for example digestion excretion
now all these processes take place even
inside a plant's body even a plant need
to throw out the waste
vomits body the plant also needs to
digest the food
I mean digest in the sense it needs to
absorb or utilize the food which it
takes in so clamps also have vascular
bundles like xylem and phloem which
conduct the food and water to different
parts of the body so the various
metabolic activities which is taking
place inside a plant growth repair so
for all these things you need energy and
the food supplies you the energy so this
entire process of getting food and then
utilizing it for various purposes is
known as plant nutrition now when you
think of a plant a plant actually needs
a lot of chemicals many chemicals or
many elements for preparing food now for
example some of the elements which are
needed by a plant are some of the very
important ones are carbon hydrogen
oxygen other than these and these are
like the most popular ones so they get
these no plant also gets its nutrition
in the form of carbohydrates proteins
fats water so these biomolecules we have
already discussed in one of our previous
lessons but other than these also they
need all these as well for example
carbon oxygens how do they get carbon
hydrogen oxygen they get it through air
and water to water they managed to get
hydrogen and oxygen because water is h2o
again from carbon dioxide the managed to
get Carmen because during the process of
photosynthesis plants take in carbon
dioxide and give out oxygen so from
there it so from air and water it
manages to get the three of these but
other than these also plants also
require quite a number of other elements
for example phosphorus nitrogen sulfur
calcium chlorine iron boron magnesium so
if you see there are quite a few I'm
just giving a few examples now here in
this lesson we will talk about the role
of all these
means in the life of a plant now all
these elements whether it is phosphorus
or not release there is so many others
for example sodium potassium they are
also required now but the amount of each
of these which are required by a plant
again differs that plant might not
require boron in a very large quantity
but again there is also a possibility
the some lunch might require Island in
large quantity where are some other
plant doesn't require atom in a large
quantity so the quantity of each of
these elements which is required by a
plant that also differs and also the
quantity of one element required by one
plant and another plant also differs now
in this lesson we will talk about all
these things and which mineral is
required in more quantities which are
required in lesser quantities and what
is their purpose in a plant now the most
important question why do plants need
Mirren's has plants not needed minerals
we would have not been studying this
lesson right so what is the role of
minerals in a plant
first and foremost growth everybody
wants to grow the plant grows it becomes
mature it starts from the story starts
from a seed so the sea changes into a
seedling and the seedling grows into a
small young plant and then the plant
gradually grows and he becomes a huge
tree and then again once the plant
becomes mature it is capable of
reproduction so it produces its
reproductive structures and from there
again a new seed is formed again a
seedling again a young plant in a mature
time and the process continues so growth
is very very important so if growth
stops life stops right so minerals are
required for growth so maybe talk by we
will be talking about each eat the role
of each mineral B you will see that
there are so many minerals which
actually directly impact the growth of
the stem
growth of the root and therefore the
growth of the overall overall Trant
tissue repair now you will have often
seen that some plants sometimes it
happens that due to lack of minerals or
due to lack of water or due to bad
weather conditions the plants drag up or
the plants are most great many sense of
the plants are already dead so the
damaged parts need to be replaced
so those damaged parts get replaced by
uniforms tissues so this t-shirt a pair
also need a lot of energy without energy
you cannot I mean you cannot form new
sense to replace the damaged cells right
so that energy also comes from the
minerals of the minerals help in tissue
repair reproduction as I said the
process of reproduction itself it
involves I mean it involves some energy
of course so called add also minerals
contribute metabolic 'some now all the
light processes for example a simulation
or excretion etc which occur how the
transport internal transport which
happens in a plant they all cannot
happen without energy and for energy we
need food and for food what is food for
a plant food is nothing but water and
minerals that is the food for plant so a
plant means carbon hydrogen oxygen water
and of course of course it also means
the food will be logistic repairs for
example you might be thinking in your
mind that till now I knew that plant
prepares its own food by photosynthesis
it's not when God is preparing its own
food why does it mean need any minerals
again that is because in order to carry
out the process of photosynthesis it
means a lot of raw materials and all of
these minerals help a plant to carry on
the process of photosynthesis
photosynthesis is nothing but utilizing
carbon dioxide the energy of sunlight
and then it prepares food in the form of
sugar and then that sugar is distributed
throughout the plant body but in order
to make that photosynthesis possible you
need all these things you need water you
need these minerals because they also
help in the process of photosynthesis so
minerals are absolutely needed by the
plant for all the metabolic activities
that happen inside the body of Earth
Trant
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