This document provides an introduction to flowers, including their parts and types. It discusses that flowers are the reproductive organs of angiosperm plants and are made up of four main parts: the calyx, corolla, androecium, and gynoecium. It describes the structures and functions of each part. The document also outlines different types of flowers, such as perfect versus imperfect, complete versus incomplete, monoecious versus dioecious, and others based on the development and presence of male and female parts.

1. Topic: Flower Introduction and It’s Types
Presenting By:
Toufique Ahmed
Reg no:----
Course Title/Code:
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Presenting Under:
Dr. ------------------
(Assistant Professor at)
Department of Plant Breeding & Genetics
Faculty of Crop Production
------------------------University-------------

2. Introduction To Flower
 Reproductive organ of angiosperm plants
especially one having showy or colorful parts.
 It is also called Bloom.
 A plant cultivated for it’s booms or blossoms.
 Flowers represent the reproductive organ of
flowering plants.
 Flowers arise from the apical portion of a stem in a
region called the Receptacle.

3. Parts of
Flower
 Calyx is the outer part of flower which protect the buds
during immature stage of flower. Individual calyx called
Sepal.
 Corolla is the inner part of flower, which colorful gives
help in pollination for attract the pollinating agent for
pollination.
Individual corolla is called Petal.
 Androecium: It is the male part of flower, it contains
Anther and Filament.

Anther: Part of stamen that contains pollen grains.
Filament: The stalk of a stamen.

4.  Gynoecium: It is the female part of flower, it contains
Stigma, Style and Ovary.
 Stigma: The apical end of the style where deposited
pollen grain enters into pistil.
 Style: The narrow elongated part of the pistil between
the ovary and stigma.
 Ovary: The organ that bears the ovules of a flower.
Parts of
Flower

5. Types of
Flower Flowers have only a gynoecium meaning they are “female”
flowers are called Carpellate/Pistillate flowers.
 Flowers have only androecium meaning they are “male”
flowers are called Staminate flowers. Staminate flowers
produce only pollen and are not capable of producing fruit.
 Plants that have carpellate and staminate flowers on a single
individual are called Monoecious.
 Plants that have carpellate and staminate flowers on
separate individual plants are called Dioecious.

6.  Flowers that have both male and female whorls/parts are
called Perfect flowers.
 Flowers that have missing any one essential whorl/part
either male or female parts are called Imperfect
flowers.
 Flowers that have four whorls/parts (calyx, corolla,
androecium & gynoecium) are called Complete flowers.
 Flowers that have missing two whorls/parts (calyx and
corolla) are called Incomplete flowers.
Types of
Flower

7.  In a flower androecium is before mature than
gynoecium is called Protoandry.
 In a flower the gynoecium is before mature than
androecium called Protogamy.
 The androecium and gynoecium both have same
length is called Homostyle.
 The androecium and gynoecium both have different
length is called Hetrostyle.
Types of
Flower

8.  The androecium and gynoecium present in a flower but both are
not functional are called Sterile Flower.
 In a flower the androecium and gynoecium both are missing is
called Natural Flower.
Types of
Flower