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WORMS - Coggle Diagram
WORMS
Platyhelminths
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Parasitic flatworms such as tapeworms that are intestinal parasites in humans and other animals, causing diseases.
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Planarians have a great capacity for regeneration. They are very fragile and when they break, each of the fragments regenerates the missing part.
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They lack a circulatory system and a respiratory system: they only absorb oxygen from the humidity of the environment.
Nematode
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Many nematodes are parasites of humans and other animals causing diseases such as trichinosis or filariasis.
Anisakis affects fish and marine mammals. They can also be infectious to humans when we eat unfrozen or cooked fish parasitized by this nematode.
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General Characteristics
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They feed on bacteria, fungi, and yeasts that develop on decaying plants.
Annelida
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Among the annelids there are species that live on land (earthworm), in fresh water (leeches) or in the sea (gusarapas and nereis)
the prostomium (which corresponds to the head), the trunk and a posterior part called the pygidium (the final part where the anus is located).
They have a closed circulatory system and lack respiratory organs, they carry out gas exchange with the outside through the skin, that is, they have cutaneous respiration.
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