Download Flowers - Warren County Schools

Flowers
the reproductive structures of
plants
4 parts of a plant
•
•
•
•
Roots
Stems
Leaves
Reproductive
(includes flowers
and fruits)
Flowers have 4 different parts
• Sepals
• Petals
• Stamens
• Pistil
Receptacle
• The place on the stem where floral organs
attach and originate.
Sepals
• Usually green; leaflike structures that
protect the flower, as it forms and
emerges.
• Sometimes sepals are colorful
Calyx
• The group of sepals on a flower
Petals
• Located just
inside the sepals
• Leaf-like and
often very
colorful
• Attract
pollinators
Corolla
• The collection of petals on a flower
The reproductive parts
• Found at the center of the flower
Stamens
• Male reproductive parts of a flower
• Arranged around the female parts
Anther
• Part of the
stamen
• Produces and
holds pollen
Filament
• Stalk that holds up the anther
Pistil
• The female part of the flower
Stigma
• Found at the end
of the pistil
• Has a sticky
surface to catch
pollen
Style
• The neck of the
pistil
Ovary
• Part of the
pistil that
contains the
ovules
Ovule
• The part of the
flower in which
the eggs are
produced and
seeds develop
Complete flowers
• Have all 4 basic parts:
• Sepals, petals, stamens and pistil
Incomplete flowers
• Flowers that are
missing one of
the four basic
parts
Perfect Flowers
• Flowers that have both male and female
parts
Imperfect flowers
• Flowers that lack one of the sex
structures