1. Chapter 3 Lesson 1
Flower – the structure of an
angiosperm plant that contains the
male and female reproductive organs.
Function of the
flower is to
Produce S E E D s!
2. Where do you find a flowers?
……at the enlarged end Of the stem
called the flower stalk or
pedicel.
4. Pistil- female reproductive part
of the flower
Includes:
1. Stigma – sticky top surface
where the pollen sticks
2. Style – long tube that
connects the stigma and the
ovary
5. 3.Ovary – houses the ovules that
contain the embryo. The ovary
develops into the fruit that provides
nutrients for the developing
embryo.
4. Ovule – contains the egg cell
and when fertilized contains the
developing embryo. The ovule
becomes the seed.
8. Stamen – male reproductive part of
the flower
Includes:
1. Anther – where one finds the
pollen grains
2. Pollen – contain the sperm nuclei
3. Filament – the long stalk that
attaches the anther to the receptacle
10. Other important parts of a flower:
1.Receptacle – the base of the
flower
2. Sepals – small green leaves that
house the developing bud (flower).
Collectively called the calyx.
11. Other important parts:
3. Pedicel – the end of the stem
where the flower is found
4. Petals – colorful structures
surround the reproductive parts of
flower and attract insects.
Collectively called corolla.
12. Complete and Incomplete Flowers
Complete flowers
A flower that has all of the
normal flower parts, namely, the
sepals, petals, stamens, and
pistil.
13. Complete and Incomplete Flowers
Incomplete flowers
An incomplete flower is missing
one of the four major parts of the
flower, the stamen, pistil, petals, or
sepals.
Examples: the oak family, the
birch family, and the walnut family
18. Perfect vs. Imperfect Flowers
Imperfect flowers lack either
stamens or pistils, and may or may
not have sepals or petals.
19. Types of Imperfect Flowers
1. Pistillate Flower
Is a female flower
Have a functional pistil, but
either have no stamen at all, or
have stamens with anthers that
are incapable of producing
pollen.
example: corn ears
20. Types of Imperfect Flowers
2. Staminate Flower
Is a male flower
Have functional stamens
capable of producing pollen, but
either have no ovary at all, or an
ovary which is not fertile.
Example: corn tassels
21. Types of Imperfect Plants
1. Monoecious -
Said of a plant species in which
all individuals bear both staminate
and pistillate flowers,
22. Types of Imperfect Plants
1. Monoecious -
For example:
Oaks—with male
flowers in catkins,
producing
wind-borne pollen,
23. Types of Imperfect Plants
1. Monoecious -
For example:
Oaks—with male flowers in catkins, producing wind-borne pollen,
and female flowers
on the stems,
producing
acorns.
24. Types of Imperfect Plants
1. Monoecious -
Ex. Also corn –
tassel = male
and ear = female but on
same plant
25. Types of Imperfect Plants
2. Dioecious -
said of a plant species
which has some individuals
which bear only staminate
flowers,
and some which bear only
pistillate flowers,
26. Types of Imperfect Plants
2. Dioecious -
and there are no perfect flowers.
These are the species that are
commonly referred to as having
male and female plants.
