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Plant Science Terms and Anatomy
Plant Science Terms and Anatomy
Horticulture I
Flowers
Horticulture I
Flowers
Flowers
Pistil
Stamen
Petal
Sepal
Recepticle
Pedicel
Stigma
Style
Ovary
Anther
Filament
Stamen: Male
Pistil: Female
FlowersExternal Parts
• Sepals-Green parts that cover and protect flower bud before it opens
• Petals-are really leaves that are modified to attract insects for flower pollination, the pretty part that we call flowers
FlowersInternal Parts
• Stamen-male part of the flower– Anther: Sac-like structure that
contains pollen & the male sex cells
– Filament: Short stalk that holds up the anther
FlowersInternal Parts
• Pistil-female part of the flower– Stigma: Sticky part on top of the
style where insects leave pollen – Style: Holds up stigma and connects
it to the ovary – Ovary: If fertilized becomes fruit (Fertilization is when pollen travels down the
style joining the sperm & the ovule)
– Ovules: The eggs or female sex cells that become seeds if fertilized
Parts of the PistilStigma
Style
Ovary
Functions of Flowers1. Produce seeds used for sexual
reproduction2. Attract insects for pollination
Pollination is the transfer of pollenfrom anther to stigma Cross Pollination is the transfer of pollen
from the stamen to the stigma of one flower to a flower on another plant
Self Pollination is the transfer of pollen to the stigma of a flower on the same plant
1. Produce fruit to protect, nourish and carry (disperse) seeds
Complete-vs-Incomplete
• Complete flowers have both male and female parts
• Incomplete flowers have only male or female parts
What do you think?!
Activity
• Dissect this Azalea flower• Locate all the the internal &
external parts of the flower • Tape all parts to a piece of paper,
then label each internal and external part