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Engineering HSC and IIT-JEE Mains and
Advanced videos. hello students today we
are studying chapter plan growth and
development in that we are studying
topic Abscisic acid, Abscisic acid stress
home or the hormone that a plant produce
when is it it is in lot of tension
abscisic acid or ABA abscisic acid is
slightly myle or you can say acidic in
nature and it has bad effects on plant
growth or you can say it has regular
 ineffects or inhibitory effects
on plant growth now why does a plant
would produce a bad hormone
what is the name whenever the plant is
under stress conditions stress
conditions could means shortage of water
there is no food available then the
temperature is too high
I think this conditions plants produces
abscisic acid or stress hormones now
what are the functions of abscisic acid
the functions of abscisic acid include
dominancy of birds and seeds information
of cambium activity oxygen and control
growth dominance EF bird senses whenever
abscisic acid is produced it inhibits
dominance or inhibits the word formation
in my mission of candy metroid cambium
remember cambium is a tissue that is
present inside the stem or which is
responsible for the stem thickening and
Bennigan's abscisic acid is produced
this inhibit that can be mac timid it
stops the growth or thickening of the
step abscission abscisic acid plays a
very vital role or important road
turning obsessions it keeps the
obsession or the untangling of roots
stems leaves in control abscisic acid
along with that helps in controlling
rule for example even if the plan lives
400 years the height of the plant will
not grow up to certain extent it will
not move beyond certain extent and this
is due to
abscisic acid
abscisic acid or a B now this is a
stress hormone or bad hormone you can
say AB SiC acid is basically slightly
acidic in nature this hormones has in
effect inhibitory effects on the growth
of the plants they suppress the growth
of the plant they stop the formation of
certain compounds they are produced
under adverse environmental conditions
example could be high temperature non
availability of what the non ability of
food that is why they are they are
termed as stress hormones
the functions of abscisic acid or ABA
and dominancy of bird senses as after
well that abscisic acid is a stress
hormone so basically it caused the sage
to become government and penned the
seeds and almonds obviously there will
be no growth of the plant even if you
add water nutrients soil inside the
plant they cause inhibition of cambium
activity and if there is inhibition of
cambium
there will be no thickening of the stem
region in the plant basically the
stagnation will remain as it is it will
not along it abscission
now abscisic acid stops obsession or
untimely falling of leaves to certain
extent they help to delay senescence of
flowers fruits leaves control this is
the hormone that is responsible to
regulate the growth of a plant or keep
in check the growth of a plant in to
certain extent obviously you don't want
the plant pitches thousand meters long
you want the plant which is at certain
height even if it survives 400 years
lastly abscisic acid is help as a 19
transpiration company what is
transformational transpiration is loss
of water from upper surface of the leaf
whenever Sun falls on the leaf those
tomato opens and there is loss of water
now imagine if a plant is a desert a
clan and if there is a lot of Sun
present and transpiration is happening
continuously don't know anything so that
water will be lost to a higher extent
and eventually the plant may die due to
loss of water
yes but abscisic acid is an anti
transparent it helps to not evolve water
basically it acts as a lane through
which there is less loss of water to
kill beneath there is high demand of Sun
present students in this part of the
chapter we have studied how abscisic
acid or a bee can prevent loss of water
and it helps in other functions of clans
I hope you all are clear about accessing
as thank
