Parts of the Gynoecium Video Lecture | Science & Technology for UPSC CSE

a flower is the most beautiful and
attractive part of a plant that
contributes
production
typically the flower has four walls
Phoenix
Carola
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and regime
and jainism
the outermost wall is the calyx
apples that are green leaf like
structures that protect the flower in
its bud stage
the sepals can be either free or United
when free the calyx is called Molly
cephalus and when united the calyx is
called nemesi palace
the next inner Hall is the Corolla
of petals that are usually thin and soft
there is a wide variety in the color and
shape of the Corolla
it can be in the shape of a wheel
funnel or bail a
is sometimes tubular
the primary function of the Corolla is
to
insects and birds for pollination
like the calyx
can be either United or free
United the corona is called gamma
petalars and when free it is called
Molly pet Alice
the arrangement of the sepals and petals
also characterizes the flower
positional arrangement of the sepals and
petals with respects to other members of
the same wall within a flower bud is
called East evasion
estivation is of many types
however the main ones are valuate
we stood
vacate and
in valuate estivation
within a wall not each other had the
margin with no overlapping while
in twisted estimation
SEPA orbital overlaps there to the next
one and so on
in imbricate estivation
the sepals or petals overlap one another
but in no particular direction
in the scenery estimation
cephalo petal covers the settle or petal
that is within it
now let's learn about Andres iam
whole inner to the Corolla
the and regime consists of stamens which
are the male reproductive organs of a
flower
generally
stork called the filament and an anther
at the tip
the answer usually has two lobes
each with two chambers which are the
pollen sacks
Saxe contained pollen grains
the stamen that is sterile is called a
stem enode
the filament service
can be of different lengths as in
mustard and salvia
the statements can also be a
attached to each other or to other parts
of the flower
for example in the mustard flower
stay ones are epi patellas or are
attached to the petals while in the lily
the stamens are epiphytes or are
attached to the parent
Stillman's can also remain free or
polyandrous as in lille or United in
varying degrees as in China Rose the pea
plant and citrus plants
in China rose
are united into one bundle and are
called mana Adolphus
in the pea flower
into two bundles and are called die
Adolphus
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into more than two bundles and are known
as polio Delphis
now the innermost Hall is the Jainism
it consists of one or more couples
had a female reproductive organs over
flower
pulse can be either fused or free
for example in tomato and mustard
the couples are fused and are called
sync opposed
while in rows and rotors
the couples are free and are called epic
artists
each couple has
three parts stigma style
and ovary
the stigma is the part of a couple that
receives the pollen grains
style is the elongated tube that lies on
the ovary and connects it to the stigma
and ovary is the enlarged basal part and
bears one or more abuse which are
attached to a placenta that is soft and
flat
once fertilization takes place
aliens form the seeds and the ovary
develops into the fruit
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the arrangement of ovules within an
ovary is called Pleasant ation
there are different types of
presentation axilla
right Oh basil free or central and
marginal
in exile presentation
is exile and the ovules are attached to
it in a multilocular ovary as in lemon
and tomato
in parietal
datian the ovary is initially single
chambered
septim later develops and divides it
into two chambers
the audios developed on the peripheral
or inner wall of the ovary
varietal presentation is seen in plants
such as cucumber and melons
when the placenta develops at the base
of the ovary and a single of you is
attached to it the presentation is
called basal presentation
this is seen in marigold and sunflower
in free or central presentation septa
are absent and the obvious develop on
the central axis as seen in Primrose and
dianthus
finally in marginal presentation along
the ventral suture of the ovary
performs a ridge
of us are born on this Ridge in two rows
as seen in the pea plant
the Felix Corolla and rashim and di nice
iam a
Falls of a flower
and the Corolla are the accessory holds
while the end regime and the Jainism are
the reproductive organs
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