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Engineering HSC and IIT-JEE Mains and
Advanced videos. Hello students today we
are studying chapter Reproduction in plants
in that we are studying topic Pollen
Pistil Interaction when I say pollen
pistil interaction it means the ability
of the pollen grain to go inside the
stigma, stigma is also called as mr. how
pollen means go inside the stigma and
interact with each other today we'll be
studying back.
Pollen Pistil interaction what is this
Pollen Pistil Inreraction during the
process of fertilization we all have
started that the pollen grain which is
present inside and anthor go inside
stigma style and ovary so during this
process of possible pollen grains
through stigma stylin over thee then is
a second interaction that takes place
and this interaction is pollen pistil
interaction so let us see what this
pollen pistil interaction is whenever
pollen grain goes through stigma the
whole passage large number of colonies
will be going through the stigma the
whole dresses now there comes a narrow
passage and this narrow passage is
through which there is a production of
sugary substance and this sugary
substance is which a pollen grain come
into context and now the pollen grain
will interact with this sugary substance
and will collide and move towards the
egg or the consider female gametophyte
this is nothing but poland distal
infraction so the ability of the stigma
or we can see the pistol to accept or
reject a pollen grain due to continuous
interactions between foley and the
pistol or stigma is nothing but foreign
Christian trash and the major role that
is played by is the sugary substance
which is produced instead along with
that this sugary substance increases the
secretion or you can say it makes the
pollen grains more in time or xn so that
it can walk or glide away towards the
female gametophyte and during the
process of double fertilization pull it
when the still interaction place of
white Andrew since we all know that
during double fertilization there are
two male gametes to do pollen pistil
interaction while male gametes fuses
with the egg cell well is another male
gamete forms the endosperm or you can
say the nutrition value provides
nutrition to the growing gametophyte
polycrystal interactions and really very
less in hydrophilic plants or plants
which grow under water
in simple language pollen pistil
interaction means interaction between
the stigma and a pollen grain the
ability of the stigma or pistol or
female gametophyte to accept what of the
check the pollen grain is due to
continuous interaction between the
pollen grain the mill example to find
another pistol or we can say the female
passage or sting
the process of pollen pistil interaction
basically starts when pollen grains
forms on the stigma for the female part
and this folding of pollen grains on
stigma during the process of
fertilization induces the formation of a
sugary substance or a back sealing
substance on the stigma or near the face
of stigma due to the absorption of this
sugary substance by the pollen grains
there in time and exam now when I talk
word intend and exam these are both the
coverings of pollen grains they both
swell up and they produce the jumper and
Poland - and we all know the jumper and
Poland group are the two pathways or the
passages through which put the male
gametophyte or both the pollen grains
Tavel into the egg paratus
where the process of further
fertilization will be taking place so in
this way pulling this to me interaction
enhances the process of fertilization or
it keeps the process of fertilization on
track when there are lots of pollen
grains they're doing process of
fertilization students in this part of
the chapter we have studied about pollen
pistil interaction I hope you are clear
with the concept of Poland Esther
interaction thank you
