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Flatworm Anatomy

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As a result the food cannot b. Dugesia is another common planarian although its not parasitic.

Animal Related Infection

While there are plenty of free living.

Flatworm anatomy. The flatworms include more than 13000 species of free living and parasitic species. Some species are terrestrial and are found under logs in or on the soil and on plants in humid areas. For example a flatworm called giardia is a common parasite found in contaminated drinking water that if consumed can cause diarrhea and severe dehydration.

Flatworms are bilaterally symmetrical. For example a planarian split lengthwise or crosswise will regenerate into two separate individuals. They all have flattened bodies that are shaped like broad leaves.

Unlike other bilaterians they are acoelomates and have no specialized circulatory and respiratory organs which restricts them to having flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion. Planaria exhibit an extraordinary ability to regenerate lost body parts. The difference between flatworms and roundworms different forms different functions.

The color of the flatworm is a very dark brown and the stomach with a thin pale line. The digestive cavity has only one opening for both ingestion and egestion. Flatworms are the simplest of the worm groups.

Planaria are common to many parts of the world living in both saltwater and freshwater ponds and rivers. A trivia quiz called flatworm anatomy. The back of the flatworm is a pale gray.

A parasite lives off another living thing called a host and can be harmful. Form and function in flatworms feeding. General physical traits anatomy.

Flatworms are found many places and can be free living or parasitic. One of the best known flatworms is the tapeworm. Anatomy of a flatworm.

This means that they can only be cut them length wise to produce two mirror image halves. A planarian is one of many flatworms of the class turbellaria. The flatworms flat worms platyhelminthes plathelminthes or platyhelminths are a phylum of relatively simple bilaterian unsegmented soft bodied invertebrates.

Test your knowledge about flatworm anatomy with this online quiz. Red planaria are flatworms that can damage coral reefs in the ocean. There are about 20000 species in this group.

Nematode anatomy cylindrical shape bilateral symmetry covered with a secreted cuticle four bands of longitudinal muscles fluid in the pseudocoel forms hydrostatic skeleton are most nematodes monoecious or dioecious. Free living carnivores or scavengers have digestive cavity mouth pharynx. Flatworms 27 1 kingdom animalia phylum platyhelminthes flatworms three embryonic germ layers bilateral symmetry cephalization head coelom greek for cavity or hollow a fluid filled body cavity acoelomates without coelom.

There are 3 classes of flat worms the planarians flukes and tapeworms. Flatworms are acoelomate which means they do not have a body cavity. The flatworm is basically a layer of tissue that has a muscular reproductive and water and salt regulating systems.

A flatworm has a thin dorsoventrally flattened body.

Flatworms Nematodes And Arthropods Concepts Of Biology

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