Transcript Flame Cells - Cloudfront.net

Platyhelminthes
By:
Brianna Turner
Z’Kiya Harper
Cashmere Patin
What are Platyhelminthes?
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Platyhelminthes are flatworms.
They are invertebrates.
They are a few millimeters thick.
They are also soft.
Symmetry
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Their symmetry is
bilateral.
Here is a Marine flatworm.
Movement && Support
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Their movement is a cilia which helps
them glide on their epidermal cells.
Body Plan
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They are soft.
They are flattened worms that have
tissues and internal organs.
Feeding && Digestion
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They are carnivores and scavengers.
They digest food through diffusion
Respiration
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Flatworms have no
respiratory organs.
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Examples: no heart,
blood vessels, no
gills, etc.
This is one of the many ways that flatworms look.
Circulation
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Flatworms do not need a circulatory
system.
Excretion
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Flame Cells - specialized cells that
filter && remove excess water from the
body.
Flame cells function in excretion.
Response
(Nervous System)
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The Nervous System allows the
eyespot to gather food && find dark
places to hide.
Asexual Reproduction
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Asexual reproduction is common in
free-living flatworms, it takes place in
fission.
The organism splits in to two, each half
grows new parts to form a new
organism.
Sexual Reproduction
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They are
hermaphrodites.
They deliver sperm
to each other &&
the eggs are laid in
clusters. They
hatch within weeks.
Here is a picture of a laid egg.
Subphylums/ Classes
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They are
turbllarians, flukes,
and tapeworms.
Here is a picture of a Fluke.
Platyhelminthes Turbllarians
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Free-living flatworms.
Most live in marine or fresh water.
Platyhelminthes Trematoda
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Also known as Flukes.
Paratactic flatworms.
Playhelminthes Cestoda
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Also known as Tapeworms.
Can get into humans.
Plathelminthes Monogenea
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Mostly on fish gills.
Questions && Answers
1.True or False: Platyhelminthes are not
hermanphrodites.
FALSE
2.Can tapeworms get inside humans?
YES
3.Can Platyhelminthes be asexual and sexual?
YES
4.Where do Flame Cells occur?
EXCRETION
5.What is their symmetry?
BILATERAL