Flowers, Monocots and Dicots
Objectives:
Students will be able to:
1. identify the parts of flowers
2. identify monocots and dicots
1
2
1
2
1&2
Monocots vs. Dicots
FLOWER
DISSECTION
Lily
A
B
D
C
Lily
B
C
A
Style
Stigma
Ovary
A
C
B
Anther
Stamen
Filament
Stamens and Pistil
A
B
F
E
C
D
P
S
S
P
P
S
P = Petal;
S= Sepal
A
B
Sepals
Bud
bract
stamens
pistil
petals
sepals
FUNCTIONS OF
FLOWER
STRUCTURES
Functions of flower structures
Sepal
• Sepals- protects the flower while it is a
bud
Petals
• Sepals- protects the flower while it is a
bud
• Petals- attract insects and animals to
aid in pollination
Stamen
A
C
B
What’s that?
• Sepals- protects the flower while it is a
bud
• Petals- attract insects and animals to aid
in pollination
• Stamens- male part of the flower which
includes the anther and filament; it
produces pollen.
Anther
• Sepals- protects the flower while it is a bud
• Petals- attract insects and animals to aid in
pollination
• Stamens- male part of the flower which includes
the anther and filament; it produces pollen.
• Anther- produce and release pollen to the
stigma of the same or another flower for
reproduction.
Anther
Stamen
Filament
• Anther- produce and release pollen to the
stigma of the same or another flower for
reproduction.
• Filament- elevates the anther away from the
flower for pollen dispersal and transports
nutrients to the anther.
• Pollen- contains sperm for fertilization.
Pistil
• Anther- produce and release pollen to the
stigma of the same or another flower for
reproduction.
• Filament- elevates the anther away from the
flower for pollen dispersal and transports
nutrients to the anther.
• Pollen- contains sperm for fertilization.
• Pistil (Carpel)-female part of the flower which
includes the stigma, style and ovary; it
produces ovules, which are similar to eggs in
animals. Produces seeds and fruit.
Stigma
• Anther- produce and release pollen to the
stigma of the same or another flower for
reproduction.
• Filament- elevates the anther away from the
flower for pollen dispersal and transports
nutrients to the anther.
• Pollen- contains sperm for fertilization.
• Pistil (Carpel)-female part of the flower which
includes the stigma, style and ovary; it
produces ovules, which are similar to eggs in
animals. Produces seeds and fruit.
• Stigma- collects pollen on its surface and
aids in fertilization
B
C
A
Style
Stigma
Ovary
Style
A
Where is it located?
B
C
What does it do?
Style
A
Where is it located?
Style
C
What does it do?
• Pollen- contains sperm for fertilization.
• Pistil (Carpel)-female part of the flower
which includes the stigma, style and
ovary; it produces ovules, which are
similar to eggs in animals. Produces
seeds and fruit.
• Stigma- collects pollen on its surface
and aids in fertilization
• Style- elevates the stigma to collect
pollen
A
Ovary
Where is it located?
B
What does it do?
C
A
Ovary
Where is it located?
B
What does it do?
Ovary
• Pollen- contains sperm for fertilization.
• Pistil (Carpel)-female part of the flower which
includes the stigma, style and ovary; it
produces ovules, which are similar to eggs in
animals. Produces seeds and fruit.
• Stigma- collects pollen on its surface and
aids in fertilization
• Style- elevates the stigma to collect pollen
• Ovary- produce ovules (eggs); when fertilized
ovules become seeds and fruits.
Monocot
Dicot
FLOWER PARTS
Multiples of 3
Multiples of 4 or 5
Dicot
Monocot
LEAVES
Parallel leaf venation
Net-like leaf venation
Monocot
Dicot
ROOTS
Diffuse Root
Taproot
STOP HERE!
FERTILIZATION
A
Fruit Development
A
B
Fruit Examples with only 1 seed
1
2
3
4
7
6
5
Example of fruit with multiple seeds
Hibiscus
F
A
E
B
D
C
Anther
Stigma
Filament
Style
Sepal
Petals
B
A
Stigmas
Pistil & Stamens
Anther
Underside of Hibiscus
Petal
Sepal