flower dissection activity. there are two types of plants……… plants with seeds and plants...
TRANSCRIPT
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FlowerDissection
Activity
FlowerDissection
Activity
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There are two types of plants………
plants with seeds and plants without seeds.
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Plants without Seeds
Mosses Liverworts
FernsHorsetails
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How do plants reproduce without seeds?
Plants without seeds reproduce through spores that are released into the air.
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Life Cycle of Ferns
The spores are both male and female, so reproduction is taking place.
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There are two types of reproduction.
Type one: Requires one cell through divisions of mitosis.
Type two: Requires two cells, a male cell and a female cell, each with half the DNA required to make the new organism.
Potato Sprouts
Flowering plants with seeds
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Plants with Seeds
Gymnosperms Angiosperms
Pine trees, or conifers, are an example of a plant that reproduces by seeds but without flowers.
Poppies are a type of flowering plant that reproduce by seeds made by flowers.
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Flowering Plants
A flowering plant has both male and female parts.
The male part is called the stamen.
The female part is called the pistil.
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Stamen: The male structure of a flowering plant
**Please write this definition on your worksheet**
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Anther: the structure located on top of the stamen and carries the pollen
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PollenPollen is a powdery substance, usually orange or
yellow in color, that gets carried by pollinators.
.
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Pollinators
A pollinator is something that moves pollen from the male parts to the female parts.
Can you name any other pollinators?
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Filament: a thread-like part that holds up the anther
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Pistil: the female structure of a flowering plant
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Stigma: the sticky surface on the top of the pistil; it traps and holds the pollen
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Style: the tube-like structure that holds up the stigma
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Ovary: the plant part at the bottom of the flower that has ovules inside (this turns into the fruit and seeds we eat)
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Petal: the colorful flower parts that surround the reproductive structures
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Sepal: the green petal-like parts at the base of the flower; they help protect the bud when it develops
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Perfect: flowers that have both male and female parts (ex. Roses, lilies, and pea plants)
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Pollination: when pollen moves from the male parts to the female parts
Watch a bee pollinate a passion flower at
http://www.youtube.com/watch?v=AYwAOmcNcCk
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Illustrate the Pollination Process
http://smithsonlineclassroom.com/media/pollination.mov
and illustrate what you see.
1. First, draw two flowers and label the parts of the male and female structures.
2. Then, watch the pollination animation at
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Good-bye!