Worms Galore09

29 %
71 %
Information about Worms Galore09
Education

Published on December 10, 2008

Author: erinNly

Source: slideshare.net

 

PLATYHELMINTHES=> “ flatworms” many marine species are free-living - many not simplest creatures w/ bilateral symmetry 1st to have “cephalization”(head region)

“ flatworms”

many marine species are free-living - many not

simplest creatures w/ bilateral symmetry

1st to have “cephalization”(head region)

PLATYHELMINTHES=> soft, flattened bodies FLAME CELLS => removal of water-soluble waste no circulatory or respiratory systems (absorb oxygen through skin) hermaphrodites includes tapeworms & flukes

soft, flattened bodies

FLAME CELLS => removal of water-soluble waste

no circulatory or respiratory systems (absorb oxygen through skin)

hermaphrodites

includes tapeworms & flukes

 

Turbellaria Trematoda Cestoda

Class: Turbellaria=> mostly marine (few freshwater) soft flattened bodies Carnivorous May possess eyespots (sense ligght & dark)

mostly marine (few freshwater)

soft flattened bodies

Carnivorous

May possess eyespots (sense ligght & dark)

 

 

 

 

 

 

 

 

 

flatworm mimicry of a nudibranch

Pseudocerus bifurcus

Pseudocerus bifurcus

Class: Trematoda=> “ flukes” parasitic suckers, tough coverings

“ flukes”

parasitic

suckers, tough coverings

 

sheep intestinal fluke:

human intestinal fluke:

Class: Cestoda=> parasitic (live in dig. tract) no mouth, no digestive system, no sense organs has a “scolex” with suckers & barbs

parasitic (live in dig. tract)

no mouth, no digestive system, no sense organs

has a “scolex”

with suckers & barbs

 

Class: Cestoda=> absorb nutrients directly through a tough outer covering each “proglottid” has a complete hermaphroditic reproductive system each proglottid can have 10,000 eggs can shed 10 proglottids/day

absorb nutrients directly through a tough outer covering

each “proglottid” has a complete hermaphroditic reproductive system

each proglottid can have 10,000 eggs

can shed 10 proglottids/day

Pork, beef, and human tapeworm, Taenia sp:

Pork, beef and human tapeworm, Taenia sp:

 

Phylum NEMATODA=> “ roundworms” have a “pseudocoelom” (1st) only reproduce sexually (1st) usually not hermaphroditic Roundworms have a digestive tract with two openings. Most roundworms have separate sexes and are covered by a protective cuticle .

“ roundworms”

have a “pseudocoelom” (1st)

only reproduce sexually (1st)

usually not hermaphroditic

Roundworms have a digestive tract with two openings.

Most roundworms have separate sexes and are covered by a protective cuticle .

Phylum NEMATODA=> 1,000,000 per shovelful of topsoil free-living species are beneficial many are parasites

1,000,000 per shovelful of topsoil

free-living species are beneficial

many are parasites

 

Phylum Nematoda Ascaris The genus Ascaris infects pigs, horses, and humans. The eggs enter hosts through contaminated food or water, develop into larvae in the intestines, and can infect the lungs. The eggs are spread in the hosts’ feces.

Ascaris

The genus Ascaris infects pigs, horses, and humans.

The eggs enter hosts through contaminated food or water, develop into larvae in the intestines, and can infect the lungs.

The eggs are spread in the hosts’ feces.

intestinal roundworm of pork & humans, Ascaris sp:

Phylum Nematoda

Phylum Nematoda Hookworms Hookworms are intestinal parasites that feed on blood. The eggs produce larvae in soil, and the larvae enter hosts through the feet. Hookworms infect about one billion people worldwide.

Hookworms

Hookworms are intestinal parasites that feed on blood.

The eggs produce larvae in soil, and the larvae enter hosts through the feet.

Hookworms infect about one billion people worldwide.

Phylum Nematoda

roundworm parasite causing “ Trichinosis”, Trichinella spiralis:

Phylum Nematoda Other Parasitic Roundworms Filarial worms infect many people in tropical countries. The most dangerous ones infect the lymphatic system and may cause elephantiasis .

Other Parasitic Roundworms

Filarial worms infect many people in tropical countries. The most dangerous ones infect the lymphatic system and may cause elephantiasis .

 

Add a comment

Related presentations

Related pages

Worms Galore09 - Education - documents.mx

1. 2. PLATYHELMINTHES=> “ flatworms” many marine species are free-living - many not simplest creatures w/ bilateral symmetry 1st to have ...
Read more

Worms Galore09 - financialspots.com

Worms - Education - documents. Worms Galore09. Annelida(segmented worms) Login or Join. Processing Read more. Teal, Turnover, and Tournaments Galore ...
Read more

Worms | LinkedIn

View 25197 Worms posts, presentations, experts, and more. Get the professional knowledge you need on LinkedIn.
Read more

Future Inet Worms - Technology - DOCUMENTS.MX

Future Inet Worms Nov 18, 2014 Technology guestc27cd9. of 25 ... Worms Galore09 Comments. RECOMMENDED. Worms. Worms. Worms. Worms. Worms. Worms. Inet Pton ...
Read more

Concordato Estipulado en Worms - Documents

concordato estipulado en worms concordato estipulado en worms entre el papa calixto ii y el emperador enrique v [worms, 23 de septiembre de 1122 ...
Read more