Flatworm Anatomy

This means that they can only be cut them length wise to produce two mirror image halves. Flatworms are found many places and can be free living or parasitic.

Flatworm Classification Read Biology Ck 12 Foundation

Flatworms are bilaterally symmetrical.

Flatworm anatomy. The back of the flatworm is a pale gray. Some species are terrestrial and are found under logs in or on the soil and on plants in humid areas. There are 3 classes of flat worms the planarians flukes and tapeworms.

Red planaria are flatworms that can damage coral reefs in the ocean. The color of the flatworm is a very dark brown and the stomach with a thin pale line. Free living carnivores or scavengers have digestive cavity mouth pharynx.

The difference between flatworms and roundworms different forms different functions. A parasite lives off another living thing called a host and can be harmful. Dugesia is another common planarian although its not parasitic.

A flatworm has a thin dorsoventrally flattened body. Form and function in flatworms feeding. As a result the food cannot b.

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. 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. Anatomy of a flatworm.

Test your knowledge about flatworm anatomy with this online quiz. While there are plenty of free living. For example a planarian split lengthwise or crosswise will regenerate into two separate individuals.

One of the best known flatworms is the tapeworm. Flatworms are the simplest of the worm groups. 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.

The flatworms include more than 13000 species of free living and parasitic species. Planaria are common to many parts of the world living in both saltwater and freshwater ponds and rivers. For example a flatworm called giardia is a common parasite found in contaminated drinking water that if consumed can cause diarrhea and severe dehydration.

The flatworm is basically a layer of tissue that has a muscular reproductive and water and salt regulating systems. They all have flattened bodies that are shaped like broad leaves. The digestive cavity has only one opening for both ingestion and egestion.

There are about 20000 species in this group. Flatworms are acoelomate which means they do not have a body cavity. The flatworms flat worms platyhelminthes plathelminthes or platyhelminths are a phylum of relatively simple bilaterian unsegmented soft bodied invertebrates.

Planaria exhibit an extraordinary ability to regenerate lost body parts. A trivia quiz called flatworm anatomy. A planarian is one of many flatworms of the class turbellaria.

General physical traits anatomy.

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