, INTRODUCTION
• Sexual reproduction in flowering plant involves transformation
of diploid sporophytic cells into haploid gametophytic cell.
• This occur through meiosis and subsequent fusion of haploid
(n) gametes from opposite sex to form a zygote (2n).
• All flowering plants shows sexual reproduction. The diversity of
structure Of the Influrosenses Flow And floral parts , shows an
amazing range of adaptations To ensure Formation of the end
product Of sexual reproduction , the fruits and seeds.
• Flowers: flowers are the main reproductive
organs,found in an angiosperm.
,• Flowering plants can be classified into
two categories , based on presence of
male and female reproductive parts.
(I) MONOECIOUS PLANTS : Such plants
have both male and female
reproductive parts on the same plant.
(II) DIOECIOUS PLANTS: Such plant
contain either male or female
reproductive structure in its flowers.
,Male reproductive structure (androecium
or stamen) consist of anther and filament
Female reproductive structure (gynoecium
or carpel) consists of stigma, style and
ovary.
PARTS OF A TYPICAL FLOWER :
A flower is the reproductive unit in an
angiospermic plants. It is meant for sexual
reproduction .
A typical flower has four different kinds of
whorls arranged succesively on the
,
,flower, its single unit is called sepal.
Generally, sepals are green, leaf like
and protect the flower in the bud
stage.
Corolla is composed of petals. Petal
are usually brigthly coloured to attract
insects for pollination.
Androecium is composed of stamens.
Each stamen represent the male
reproductive organ consists of a stalk
,GYNOECIUM is the female reproductive part of
the flower and is made up of one or more carpel.
A carpel consist of three parts namely stigma,
style and ovary.
Ovary is the enlarged basal part , on which lies
the elongated tube, the style .
The style connects the ovary to the stigma.
The stigma is usually at the tip of the style and is
the receptive (landing) surface of pollen grains.
, The ovary holds the ovules, the
Female Gametophytes.
When the ovules are Fertilised,
the ovule become the seed and
the ovary becomes the fruit.
A flower can be bisexual
(contains both male and female
reproductive parts) or unisexual
(only one of the reproductive part
• Sexual reproduction in flowering plant involves transformation
of diploid sporophytic cells into haploid gametophytic cell.
• This occur through meiosis and subsequent fusion of haploid
(n) gametes from opposite sex to form a zygote (2n).
• All flowering plants shows sexual reproduction. The diversity of
structure Of the Influrosenses Flow And floral parts , shows an
amazing range of adaptations To ensure Formation of the end
product Of sexual reproduction , the fruits and seeds.
• Flowers: flowers are the main reproductive
organs,found in an angiosperm.
,• Flowering plants can be classified into
two categories , based on presence of
male and female reproductive parts.
(I) MONOECIOUS PLANTS : Such plants
have both male and female
reproductive parts on the same plant.
(II) DIOECIOUS PLANTS: Such plant
contain either male or female
reproductive structure in its flowers.
,Male reproductive structure (androecium
or stamen) consist of anther and filament
Female reproductive structure (gynoecium
or carpel) consists of stigma, style and
ovary.
PARTS OF A TYPICAL FLOWER :
A flower is the reproductive unit in an
angiospermic plants. It is meant for sexual
reproduction .
A typical flower has four different kinds of
whorls arranged succesively on the
,
,flower, its single unit is called sepal.
Generally, sepals are green, leaf like
and protect the flower in the bud
stage.
Corolla is composed of petals. Petal
are usually brigthly coloured to attract
insects for pollination.
Androecium is composed of stamens.
Each stamen represent the male
reproductive organ consists of a stalk
,GYNOECIUM is the female reproductive part of
the flower and is made up of one or more carpel.
A carpel consist of three parts namely stigma,
style and ovary.
Ovary is the enlarged basal part , on which lies
the elongated tube, the style .
The style connects the ovary to the stigma.
The stigma is usually at the tip of the style and is
the receptive (landing) surface of pollen grains.
, The ovary holds the ovules, the
Female Gametophytes.
When the ovules are Fertilised,
the ovule become the seed and
the ovary becomes the fruit.
A flower can be bisexual
(contains both male and female
reproductive parts) or unisexual
(only one of the reproductive part
