Nutrition in Animals - Lecture 1 Video Lecture - Class 7

today we are going to study about
nutrition and animals
nutrition in animals okay to device
going story about nutrition in animals
before starting the topic you must know
what is nutrition nutrition
nutrition is the intake
and utilization of utilization of
nutrients
so nutrition is an intake and
utilization of nutrients now come a new
term what is nutrients new dreams let us
see what is new trains nutrients
these are the substances
required for
growth
repair and maintenance of our body
we also call nutrients the biomolecules
biomolecules examples are carbohydrates
that vitamins
proteins these all come under the
nutrients that make up our body
carbohydrates are required for the
energy fats are also required for energy
and proteins are called the building
blocks of her body so nutrients these
are the substance is required for growth
repair and maintenance of our body
mainly the nutrition is being divided
into two categories two categories on
the basis of the mode of the nutrition
first is the autotrophic autotrophic
mode of nutrition and second one is the
heterotrophic
heterotrophic Ottomans autumn in self
and traffic means food auto means cells
and traffic means food so the
autotrophic organisms are those organism
which utilize which make your own food
and the best example is plans lance
prepare their own food with the help of
the light energy as you all know now we
define what is heterotrophic hetero
means different
different and traffic meets the same
food the heterotrophic organisms cannot
prepare your own food they are not able
to prepare their own food to depend on
other organisms or plants for their food
example are the best example are the
humans now we will define heterotrophic
heterotrophic organisms are again
heterotrophic organisms are again
divided into three categories on the
mood of on the basis of the mood of the
nutrition
they are again divided into three types
on the basis how on the basis of
mode of nutrition means that how they
are acquiring their nutrition so first
is a parasitic parasitic second septra
traffic
and the third Hulu Zoe nutrition so we
will define these one by one starting
with the parasitic head to traffic
nutrition the parasitic organism utilize
nutrition from other living plants or
animals derive or absorb nutrition
from other living from other living
lancer animal
parasitic organism are those that derive
or absorb nutrition from other living
plants or animals they the parasitic
organism in which the parasite leave in
the body of a host host and it depends
depends on this for nutrition
examples other wants different types of
worms roundworm that recite in the body
of other living organism and one more
example is that the Plasmodium
now coming to the separate traffic mode
of nutrition supply traffic absorbs org
organic matter
from dead and decaying organism dead and
decaying organisms
examples are bacteria
and fungi these separate traffic
organism world they do that they they
digest extracellularly they give out
your enzymes outside the dead organism
upon the dead organism and consume the
nutrition from there only now coming to
the holos work mode of nutrition in hulu
civic there are some steps like
ingestion
digestion
absorption
Evan elation
and each issue
in a holosuite type of organism these
steps these all steps take place these
steps
take please
inside the body of the organism in hulu
so type of nutrition these steps
ingestion digestion absorption
assimilation and Egyptian takes place
inside the body of the organism in the
example is amoeba and humans humans have
a whole azoic mode of nutrition that is
the ingalls all of the food and perform
these chips inside their body now now
will mainly deal with the whole azoic
mode of nutrition that as we who lose
WIC nutrition
now we will studied in detail tuvalu
suede nutrition taking example first of
all we'll take the example of the
organism amoeba
amoeba as you all know is a unicellular
organism unicellular organism that lives
in water
the mode of nutrition as I already told
you is who lose weight type of nutrition
the process
of obtaining
food
is by phagocytosis
or it is also known as cell eating
as amoeba is taking its whole food this
process is known as hollow stoic
nutrition now we'll diagrammatically see
how amoeba cakes its food and we'll
follow all the steps that I already told
you that ingestion digestion absorption
assimilation an Egyptian of amoeba so
first this is the amoeba here is the
nucleus of amoeba this is the cytoplasm
then of food particle comes nearby will
describe it this is the food particle
this one is the nucleus and this is the
cytoplasm of the amoeba now in first
step what happens as it sees a food
particle it exchanged its projections
it extends these projections these
projections are known as the pseudopodia
these projections are known as pseudo
odia that helps in engulfing the food so
this is the first step will call this
step as the ingestion
in second the amoeba this was a food
particle now this amoeba has taken the
food and closed his projections like
this now in third step the food vacuole
will come inside the cell like this this
was the food particle and the digestion
will occur inside the food where cure of
derbs amoeba this is the food that cure
the next step what happens the digestion
of the food starts in the food vacuole
itself so here we can see that the
digestion of food is been taking inside
this food vacuole that is why amoeba has
intracellular digestion intracellular
digestion it's a very important point
that amoeba has intracellular dietitian
now in next step what happens the
digestion of the food particles starts
inside the food will cure the nutrients
from the cytoplasmic enters enters
inside this food vacuole they are the
food particles the enzymes from the
cytoplasmic enters into the enzymes from
the cytoplasmic enters into the food
vacuole and the digestion is being
started
so this step is the second step that is
known as the digestion digestive enzymes
from the cytoplasmic
enters into the food vacuole and start
digestion
now next step what happens the amoeba s
Emily absorption of the digested food
takes place absorption
this was the food the cure and particle
has been digested now so the new trains
would come outside the food we're cured
so this step is the absorption in
absorption what happens the digested
food is being digested food is
circulated
throughout the cell
by cytoplasmic streaming
that is also known as
also known as psych losses
the next step is assimilation
assimilation means absorb food is used
to obtain energy we cannot show the
absorption in this diagram because it is
an active process it requires energy so
now what happens in the last step after
assimilation the undigested food
undigested food is expelled as expels
like this the undigested food here is
expelled out of the body by the membrane
this is the last step of the this is the
egyptian magician means removal of waste
materials outside the cell
this comes out of the body and the
membrane of the amoeba has a power of
regeneration so by a power of
regeneration when the waste comes
outside the membrane against repair so
this was the hollows owing mode of
nutrition of amoeba in our next class we
will study about the nutrition in human
beings that is also a whole awake mode
of nutrition