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angeleenie70
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What are Platyhelminthes?
flat and wide worms
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The outer layer of a flatworm
Ectoderm
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The middle layer of a flatworm
Mesoderm
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the inner layer of a flatworm
endoderm
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the most common flatworms
planarian
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a parasitic type of flatworm
tapeworm
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must have a host organism in order to live, they feed on and usually harm the host
parasite
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the ability to regrow lost or damaged parts
regererate
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organism on which a parasite lives
host
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thread-like roundworms
Nematoda
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the waxy covering that protects roundworms
cuticle
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ribbon worms; long, thin, mostly marine worms
Nemertea
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ringed, segmented worms
Annelida
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What are the simplest worms?
worms in the Phylum Platyhelminthes (flatworms)
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What do parasites require in order to live?
a host organism
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What kind of planarians don't depend on other organisms for survival?
free living ones
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the Phylum Platyhelminthes (Flatworms) includes what three groups of worms?
Planarians, tapeworms, and flukes
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Most round worms are __________ but some are ___________.
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What are the four types of organs of a roundworm?
- muscle
- nerve
- excretory
- reproductive
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What are the 3 kinds of roundworms?
- hookworms
- heartworms
- trichina worms
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What kind of roundworms are commonly found in dogs?
Heartworms
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How are heartworms transmitted to dogs?
mosquitoes
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What kind of roundworms are commonly found in pork? What disease can you get from this roundworm?
- Trichina worms
- Trichinosis
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How can you keep from getting hookworms?
wear shoes outside
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What are the most complex kinds of worms?
segmented worms
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What is the best known segmented worm?
earthworm
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What kind of worm is the most advanced worm?
earthworm
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What are 4 types of segmented worms?
- earthworms
- leeches
- bristle worms
- marine worms
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What kind of circulatory system do earthworms have?
closed
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what is a closed circulatory system?
consists of blood vessels that carry blood
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How do earthworms breathe since they don't have a respiratory system?
they breathe through their skin
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Where are planarians found?
fresh water and moist places
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Where are tapeworms found?
in the intestines of animals and people
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Where are flukes found?
in animals and people
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Where are nematoda found?
in all types of water and soil
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Where are Nemertea found?
- mostly in salt water
- some in fresh water and soil
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Where are Annelida found?
water and soil
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What is the body design design of Platyhelminthes?
one body opening for food in and wast out
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What is the body design of Nematoda?
- mouth for getting food and an anus for waste
- simple organs and systems
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What is the body design of Nemertea?
gut with mouth and anus; no body cavity
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What is the body design of Annelida?
- Segmented with a liquid-filled body cavity
- they have setae or bristle-like structures on the outside of the body
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True or false: All Platyhelminthes, Nematoda, Nemertea, and Annelida have bilateral symmetry
True
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How do Platyhelminthes move?
use tiny hairs called cilia that move in a mucus track
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How do Nematoda move?
gets into the host's body through contaminated food and water (parasite)
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How do Nemertea move?
Swim in water or burrow in soil
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How do Annelida move?
through water or burrow into the soil using setae
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What type of reproductive system does Platyhelmintes have?
asexual
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What type of reproductive system does Nematoda and Nemertea have?
sexual
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What type of reproductive system does Annelida have?
sexual and asexual
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What does Platyhelminthes eat?
small organisms and the dead bodies of larger organisms
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What do Nematoda eat?
host's food
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What do Nemertea eat?
small organisms
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What do Annelida eat?
- small invertebrates
- leeches eat blood
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