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Flower ppt

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Jenishree Krishnan

This document summarizes the parts of a flower. It discusses that a flower has four main parts: the calyx, corolla, androecium, and gynoecium. It describes each part in detail, including that the calyx and corolla are non-essential parts, while the androecium and gynoecium are essential reproductive parts. It also classifies flowers as complete or incomplete based on presence of parts, and discusses types of unisexual flowers.

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FLOWER S. VEN VANITHA JENISHREE, I B.Ed, BIOLOGICAL SCIENCE, VOC COLLEGE OF EDUCATION.
FLOWER  Flower is one of the part of the plant.  It is the Reproductive part.  It is the beautiful and colourful part of the flower.
FLOWER The biological function of a flower is to facilitate reproduction, usually by providing a mechanism for the union of sperm with eggs.
SMALLEST FLOWER World’s smallest flower is Wolffia
LARGEST FLOWER World’s largest flower is Rafflesia
PARTS OF FLOWER There are 4 parts in a flower. They are Calyx Corolla Androecium Gynoecium
CLASSIFICATION OF PARTS There are 2 classification of flower parts. They are oNon-essential part • Calyx • Corolla oEssential part • Androecium • Gynoecium
PARTS OF FLOWER
PARTS OF FLOWER
CALYX  Calyx is the outermost whorl of the flower.  The separate unit of calyx is called sepal.  It is almost green in colour.  It is an non essential part of the flower.
PETALOID In some flowers the calyx is brightly coloured, it is known as petaloid.
TYPES OF CALYX There are 2 types of calyx. They are Polysepalous Gamosepalous
POLYSEPALOUS In some flowers the petals are free, such type is called polysepalous. Eg. Rose
GAMOSEPALOUS In some flowers the sepals are fused, such type is called gamosepalous. Eg. Datura
COROLLA It is the second whorl of the flower. It is an non-essential part. The individual part of the corolla is known as petals. It is variously coloured.
TYPES OF FLOWER BASED ON PETALS There are 3 types of flower based on the petals. They are oPolypetalous oGamopetalous oApetalous
POLYPETALOUS When the petals are free, such flowers are called as polypetalous flower. Eg. rose
GAMOPETALOUS Flowers having fused or united petals, such type is called gamopetalous. Eg. Hibiscus, Datura
APETALOUS In some rare flowers the petals are absent, such flowers are called apetalous. Eg. Brassica rapa
ANDROECIUM It is the third whorl of the flower. It is the essential part of the flower. The separate unit is known as stamen. It is the male reproductive part. It has a powdery substance in it called pollen grains, which is responsible for the pollination of flower.
PARTS OF ANDROECIUM The stamen has 2 parts. They are Anther – It is the head part of the stamen, in which the powdery substance called pollen grains are present which plays major role in pollination of the flowers. Filament – It is the stalk which holds the anther.
GYNOECIUM It is the innermost whorl of the flower. It is an essential part of the flower. The separate unit is called carpel. It is the female reproductive part. After fertilization it develops into the fruit.
PARTS OF GYNOECIUM It has three parts namely, Stigma – It is the top part of the carpel and it is sticky. The pollen grains carried by the pollinators are stick in it. Style – It is a tube in which the sperm cell enters and reaches the ovary. Ovary – It is the main part where the fertilization of sperm and eggs are happened. The ovary produces the eggs for fertilization. The ovary has an ovary wall and ovules. After fertilization the ovary develops into fruit, the ovary wall develops into the outer coat of the fruit and the ovules developed into the seeds.
TYPES OF FLOWER FLOWER INCOMPLETE FLOWER MALE FLOWER FEMALE FLOWER COMPLETE FLOWER BISEXUAL FLOWER
TYPES OF FLOWER Based on the parts of the flowers, it can classified into two types. They are Complete flower – The complete flower has all the 4 whorls in it (i.e.calyx, corolla, androecium and gynoecium are present). Most of all the bisexual flowers are complete flowers. Incomplete flower – The incomplete flower does not have all the 4 whorls i.e., any of the part is absent. All the unisexual flowers are incomplete flower. The unisexual flower has any one of the reproductive part (i.e., either androecium or gynoecium is present)
COMPLETE FLOWER – BISEXUAL FLOWER In the bisexual flower both the reproductive part is present. i.e., androecium and gynoecium present in the same flower.
INCOMPLETE FLOWER – UNISEXUAL FLOWER Unisexual flowers are 2 types. They are, Male flower – In male flower androecium is present and gynoecium is absent. Otherwise known as staminate flower. Female flower – In female flower gynoecium is present and androecium is absent. Otherwise known as pistillate flower.
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Flower ppt

  • 1. FLOWER S. VEN VANITHA JENISHREE, I B.Ed, BIOLOGICAL SCIENCE, VOC COLLEGE OF EDUCATION.
  • 2. FLOWER  Flower is one of the part of the plant.  It is the Reproductive part.  It is the beautiful and colourful part of the flower.
  • 3. FLOWER The biological function of a flower is to facilitate reproduction, usually by providing a mechanism for the union of sperm with eggs.
  • 6. PARTS OF FLOWER There are 4 parts in a flower. They are Calyx Corolla Androecium Gynoecium
  • 7. CLASSIFICATION OF PARTS There are 2 classification of flower parts. They are oNon-essential part • Calyx • Corolla oEssential part • Androecium • Gynoecium
  • 10. CALYX  Calyx is the outermost whorl of the flower.  The separate unit of calyx is called sepal.  It is almost green in colour.  It is an non essential part of the flower.
  • 11. PETALOID In some flowers the calyx is brightly coloured, it is known as petaloid.
  • 12. TYPES OF CALYX There are 2 types of calyx. They are Polysepalous Gamosepalous
  • 13. POLYSEPALOUS In some flowers the petals are free, such type is called polysepalous. Eg. Rose
  • 14. GAMOSEPALOUS In some flowers the sepals are fused, such type is called gamosepalous. Eg. Datura
  • 15. COROLLA It is the second whorl of the flower. It is an non-essential part. The individual part of the corolla is known as petals. It is variously coloured.
  • 16. TYPES OF FLOWER BASED ON PETALS There are 3 types of flower based on the petals. They are oPolypetalous oGamopetalous oApetalous
  • 17. POLYPETALOUS When the petals are free, such flowers are called as polypetalous flower. Eg. rose
  • 18. GAMOPETALOUS Flowers having fused or united petals, such type is called gamopetalous. Eg. Hibiscus, Datura
  • 19. APETALOUS In some rare flowers the petals are absent, such flowers are called apetalous. Eg. Brassica rapa
  • 20. ANDROECIUM It is the third whorl of the flower. It is the essential part of the flower. The separate unit is known as stamen. It is the male reproductive part. It has a powdery substance in it called pollen grains, which is responsible for the pollination of flower.
  • 21. PARTS OF ANDROECIUM The stamen has 2 parts. They are Anther – It is the head part of the stamen, in which the powdery substance called pollen grains are present which plays major role in pollination of the flowers. Filament – It is the stalk which holds the anther.
  • 22. GYNOECIUM It is the innermost whorl of the flower. It is an essential part of the flower. The separate unit is called carpel. It is the female reproductive part. After fertilization it develops into the fruit.
  • 23. PARTS OF GYNOECIUM It has three parts namely, Stigma – It is the top part of the carpel and it is sticky. The pollen grains carried by the pollinators are stick in it. Style – It is a tube in which the sperm cell enters and reaches the ovary. Ovary – It is the main part where the fertilization of sperm and eggs are happened. The ovary produces the eggs for fertilization. The ovary has an ovary wall and ovules. After fertilization the ovary develops into fruit, the ovary wall develops into the outer coat of the fruit and the ovules developed into the seeds.
  • 24. TYPES OF FLOWER FLOWER INCOMPLETE FLOWER MALE FLOWER FEMALE FLOWER COMPLETE FLOWER BISEXUAL FLOWER
  • 25. TYPES OF FLOWER Based on the parts of the flowers, it can classified into two types. They are Complete flower – The complete flower has all the 4 whorls in it (i.e.calyx, corolla, androecium and gynoecium are present). Most of all the bisexual flowers are complete flowers. Incomplete flower – The incomplete flower does not have all the 4 whorls i.e., any of the part is absent. All the unisexual flowers are incomplete flower. The unisexual flower has any one of the reproductive part (i.e., either androecium or gynoecium is present)
  • 26. COMPLETE FLOWER – BISEXUAL FLOWER In the bisexual flower both the reproductive part is present. i.e., androecium and gynoecium present in the same flower.
  • 27. INCOMPLETE FLOWER – UNISEXUAL FLOWER Unisexual flowers are 2 types. They are, Male flower – In male flower androecium is present and gynoecium is absent. Otherwise known as staminate flower. Female flower – In female flower gynoecium is present and androecium is absent. Otherwise known as pistillate flower.