Chapter 27 Round Worms. Kingdom…..animal Kingdom…..animal Phylum……..nematode...
-
Upload
julia-goodwin -
Category
Documents
-
view
251 -
download
1
Transcript of Chapter 27 Round Worms. Kingdom…..animal Kingdom…..animal Phylum……..nematode...
Chapter 27Chapter 27
Round WormsRound Worms
Kingdom…..animalKingdom…..animal Phylum……..nematodePhylum……..nematode
Characteristics of Characteristics of NematodesNematodes
Round worms with no segmentsRound worms with no segments Some are “free living”Some are “free living” Some are parasitesSome are parasites Have digestive system with two Have digestive system with two
openings…..mouth ( anterior end)openings…..mouth ( anterior end)
anus ( posterior end)anus ( posterior end) Tube within a tubeTube within a tube
Nematode StructureNematode Structure
Heart Worm In Our PetsHeart Worm In Our Pets
How does your pet get How does your pet get the heart worm?the heart worm?
a) Immature worm can a) Immature worm can be introduced to your be introduced to your pet by a mosquito bite pet by a mosquito bite the worm matures the worm matures quickly and produces quickly and produces offspringoffspring
The heart and the The heart and the arteries of your pet arteries of your pet can become can become clogged with the clogged with the wormsworms
100% preventable100% preventable
Roundworms and Human Roundworms and Human DiseasesDiseases
AscarisAscaris Intestinal parasiteIntestinal parasite FOund in FOund in
unsanitary areasunsanitary areas
HookwormHookworm Lives in small Lives in small
intestineintestine Sucks blood from Sucks blood from
its hostits host Found in Found in
unsanitary areasunsanitary areas Larva usually enter Larva usually enter
though the footthough the foot
Kingdom: AnimalKingdom: Animal Phylum: AnnelidaPhylum: Annelida
Characteristics of AnnelidsCharacteristics of Annelids
Round worms with segmentsRound worms with segments
What About The What About The Earthworm?Earthworm?
Kingdom:AnimaliaKingdom:Animalia Phylum:AnnelidaPhylum:Annelida Class:ClitellataClass:Clitellata \Order:Haplotaxida\Order:Haplotaxida Suborder:Suborder:LumbricinLumbricinaa
Lumbricus terrestris, the Common Earthworm
External Structure of the External Structure of the EarthwormEarthworm
Internal StructureInternal Structure
Did You KnowDid You Know
The everyday earthworm is a “SHIM”.The everyday earthworm is a “SHIM”. Mucous is needed for the worm to Mucous is needed for the worm to
breathe because it does not have breathe because it does not have lungs.lungs.
It has 5 pairs of pumping vesselsIt has 5 pairs of pumping vessels
Where did earthworms come Where did earthworms come fromfrom
Experts believe that the earthworm Experts believe that the earthworm came from Europe by the settlers came from Europe by the settlers when they brought their plants overwhen they brought their plants over
What do they eat?What do they eat?
Dirt which contains pieces of plants Dirt which contains pieces of plants and animalsand animals
The stool of the earthworm is an The stool of the earthworm is an excellent fertilizerexcellent fertilizer
Food enters the mouth and Food enters the mouth and undigested materials exits the anusundigested materials exits the anus
Earthworms love darknessEarthworms love darkness The sun will dry up their skinThe sun will dry up their skin The light will paralyze them if they The light will paralyze them if they
are exposed to the light for more are exposed to the light for more than an hourthan an hour
Why does the earthworm leave their burrow Why does the earthworm leave their burrow when it rains?when it rains?
Earthworms can survive under water Earthworms can survive under water for several weeks presuming the for several weeks presuming the water is rich in oxygenwater is rich in oxygen
They leave their burrow to travel They leave their burrow to travel overland to new locationsoverland to new locations
Parasitic AnnelidsParasitic Annelids
leechleech