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Facts about Planaria

Planaria

Planarians have simple organ systems and lack respiratory and circulatory systems.

Planaria

Flame cells remove unwanted liquids from the body by passing them through ducts that lead to excretory pores where the waste is released on the dorsal surface of the planarian.

Planaria

Planarians are globally distributed and common to many parts of the world, residing in freshwater ponds and rivers.

Planaria

Systematists have traditionally recognized three major groups of triclads: Paludicola (freshwater planarians), Maricola (marine planarians), and Terricola (land planarians), but some propose a fourth planarian infraorder Cavernicola (Carranza et al.

Planaria

Planarians receive oxygen and release carbon dioxide by diffusion.

Planaria

Planarians move by beating cilia on the ventral surface, allowing it to glide along on a film of mucus.

Planaria

Other common varieties are the blackish Planaria maculata and Dugesia dorotocephala.

Planaria

Planarians or triclads are widely distributed, common, and diverse.

Planaria

At the heart of modern Ankara is Atatьrk's mausoleum, An?tkabir.

Planaria

The most frequently used planarians in high schools and first-year college laboratories are the brownish Dugesia tigrina.

Planaria

A planarian is any flatworm (phylum Platyhelminthes) of the suborder (or order) Tricladida of the class Turbellaria.

Planaria

Planarians range in size from about 3 to 12 mm.

image: i.imgur.com
Planaria

A planarian can reproduce either asexually or sexually, with sexual reproduction being most common.

Planaria

Planarians are common organisms for scientific research and classroom teaching.

Planaria

In asexual reproduction, the planarian anchors its tail end, then detaches its tail end from the anterior portion (the rupture line is posterior to the mouth, with each half regrowing the lost parts.

image: study.com
Planaria

Some planarians have achieved pest status as a result of being invasive species.

Planaria

The term "Polynesia" was coined by Charles de Brosses in 1756, and originally applied to all the islands of the Pacific.

Planaria

The intestines of the planarian branch throughout the body.

image: study.com
Planaria

Primarily free-living, planarians are characterized by a soft, broad, leaf-shaped (when elongated) body with cilia and a three-branched digestive tract (as reflected in the name Tricladida).

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