SHIVANSH INTERNATIONAL SCHOOL
Pipraud Nawapara Rajim
SESSION 2022-23
CLASS –X
STRUCTURE, PARTS & FUNCTIONS OF
FLOWERS
Guided By :- Submitted by:-
SHREYA PAREEK Ma’am SHRADDHA SAHU
OUTLINE
o FLOWERS AND IT’S PART
(IN DEATAILED)
o PARTS AND THEIR
FUNCTIONS
What is Flower and
its Type?
A typical structure of the flower
includes four whorls calyx, corolla,
androecium and gynoecium.
Depending on the presence or
absence of one or more floral whorls,
flowers are classified into two
different types:
a) Complete Flower: A flower that
has all four whorls is called a
complete flower.Examples:
mustard, Hibiscus, etc.
b) b) Incomplete Flower: When one
or more of these whorls are
missing in a flower, it is called an
incomplete flower. Examples:
papaya, watermelon, etc.
Depending on the presence or absence of
the male and female reproductive parts,
flowers can be classified as:
1. Bisexual: A flower that bears both
stamen and pistil is called a bisexual or
perfect flower.
2. Unisexual: A flower that lacks one of the
(male or female) reproductive
structures is called a unisexual
flower.This can be of two types:
a) Female Flower: A flower that lacks
stamens is said to female flower or
pistillate flower.
b) Male Flower: A flower that does not
possess pistil is called a male flower or
staminate flower.
PARTS OF FLOWER
Flowers have four main
components, namely sepals,
petals, carpels, and stamens.
A flower could be male,
female, or both. If both
stamen and carpel are
present, it is a bisexual
flower. If either stamen or
carpel is present, it is called a
unisexual flower.
PARTS OF FLOWER
Receptacle: It is part of the flower
present at the central base at which the
stalk attaches.
Sepals: It is the outermost whorl of the
flower. It is a leaf-like structure beneath
the petals. The group of sepals is called a
calyx. The primary function of the calyx
is the protection of the flower in the bud
stage.
Petals: It is the part of the flower that is
vibrant and attracts pollinators. It is
collectively known as the corolla.
Stamen: It is the male part of the flower
which contains the pollen grains. It has
two parts: Anther and Filament.
Carpels: It is the female part of the
flower which contains the ovary. It has
three parts: Stigma, Style, and Ovary.
THE VEGITATIOVE
PARTS OF FLOWERS
It is the part of a
flower that is not
involved in the
process of
reproduction. It
includes all the parts
of the flower apart
from the stamen and
carpel.
Reproductive Part
of a Flower
Reproductive parts of the flowers are
the part that performs sexual
reproduction. Angiosperms are
flowering plants and have two parts
male and female.
1. Stamen: It is also called
Androecium. It contains anther and
filament. The filament is the long
slender stalk that holds the anther.
The anther is the part of the flower
that contains anther sacs in its
lobes called pollen grains. The
pollen grains are the male gametes
that interact with the female
gamete to form the endosperm
and the embryo.
2. Carpels: It is also called
Gynoecium. If it contains
a single pistil, it is called
monocarpellary. If it
includes many pistils, it is
termed multicarpellary.
The stigma, style, and
ovary are the parts of the
carpel. The stigma is the
receptive surface that
attaches the pollen; the
style is the connection
between the stigma and
the ovary; the ovary is
the central part of the
plant where the process
of double fertilization
takes place.
FUNCTIONS OF A
FLOWER IN PLANTS
The main function of the
flower is to carry out the
process of sexual
reproduction. But,
different parts of the
flower carry out many
other important
functions too.
Parts of flower Functions
SEPALS Provide protection to flowers
during the bud stage.
PETALS Brightly coloured and have a
strong fragrance to attract
pollinators. Wind pollinated
petals are comparatively dull
and without smell and nectar as
they do not need insects for
pollination.
ANTHER Produce male gametes for
sexual reproduction.
Parts of flower Functions
OVARY Produce female gametes
for sexual reproduction.
NECTARY Secretes sweet fluid to
attract insects like bees
for pollination.
STIGMA Receives pollen grains
during pollination due to
their sticky nature.
STYLE Pollen tube travels
through the style to
reach the ovule.
THANK YOU
