introduction to plants part 1 - sbapezzuto.weebly.com
TRANSCRIPT
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Introduction to Plants Part 1
Susan B. Anthony Middle School
7th Grade Life Science
Mr. Pezzuto
4-24-12
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DO NOW QUIETLY To the Left is a
picture of a
Bee Orchid
(Ophrys
apifera)
Explain how
this adaptation
increases the
fitness of this
flower.
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Learning Goals for Today
Know how plants use the sun for energy.
What are the general characteristics of
plants?
Parts of the flower (male and female)
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General Characteristics of Plants
Turn and Talk: define terms
with your group (15 seconds)
Eukaryotes-
Multicellular
Autotrophs-
Cells
Contain Cell Walls
Contain Chloroplasts
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Heterotroph vs. Autotroph
Autotroph:
Heterotroph:
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Heterotroph or. Autotroph
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General Characteristics of Plants
Plant cells typically have a cell wall, a
boundary that surrounds the cell
membrane and protects the cell
Cell walls are mostly made of
CELLULOSE
All plants have chloroplasts, where they
photosynthesize using the pigment
chlorophyll.
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Photosynthesis
Photosynthesis is the process of
converting carbon dioxide gas and water
into glucose and oxygen.
6CO2 + 6H2O + sunlight -> C6H12O6 + 6O2
6CO2+6H2O è C6H12O6 + 6O2
Carbon dioxide + Water è Sugar + Oxygen
6CO2+6H2O è C6H12O6 + 6O2
Carbon dioxide + Water è Sugar + Oxygen
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Photosynthesis Continued
6CO2+6H2O C6H12O6 + 6O2
Carbon dioxide + Water è Sugar + Oxygen
The SUN does not MAKE the food!
The Sun POWERS the food-making.
Sun = oven
Sun is NOT the sugar in the recipe!
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Angiosperms v.s Gymnosperms
Plants are separated into two classes
Angiosperms are flowering plants.
Gymnosperms are seed
producing plants.
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A Tulip is a
Great
Example of an
Angiosperm
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Turn and Talk:
From what you know about
flowers from science this
year, how do plants
reproduce using flowers?
(Think Mendelian Genetics)
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Parts of the Flower
Sepals-green leaf-like part, covers
and protects bud before opening
Petals-modified leaves-attract
animal pollinators
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Male Parts
Anther (produces pollen)
and Filament = stalk
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Female Parts
Stigma-top-sticky, hairy, feathery-catches pollen
Style - tube leading from stigma to ovary
Ovary- where eggs are located in
Ovules which develop into the seeds in
(Ovary develops into fruit)
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Sunflowers
have a large
Stigma
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Based on the Video
Ticket to leave http://www.youtube.com/watch?v=4YQ5q1cjEU4
What are two ways in which hermaphroditic
angiosperms self pollenate?
How have some angiosperms adapted to
maximize self pollination by bees?