what are the main differences among the three main phyla of worms?
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What are the main differences among the three main phyla of worms? Flatworms belong to the phylum Platyhelminthes, roundworms belong to the phylum Nematoda; segmented worms belong to the phylum Annelida.
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The two most prominent features that distinguish roundworms from flatworms are the presence of a pseudocoelom, or partially developed body cavity, and a complete digestive tract with two openings, a mouth and an anus.
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The most common types of these parasitic worms are roundworms and hookworms. They are both intestinal parasites. They live and grow inside the intestine of your pet. Roundworms and hookworms develop from eggs into larvae (immature worms).
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Annelidasegmented worms(Also: ringed worms) The annelids include earthworms, polychaete worms, and leeches. All members of the group are to some extent segmented, in other words, made up of segments that are formed by subdivisions that partially transect the body cavity. Segmentation is also called metamerism.
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There are four major groups of parasitic worms: monogeneans, cestodes (tapeworms), nematodes (roundworms), and trematodes (flukes). Helminths are characterized by the presence of attachment organs which include suckers, hooks, lips, teeth, and dentary plates.
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['Blood Worm.', 'Brine Shrimp.', 'Daphnia.', 'Tubifex.']
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['The basic form consists of multiple segments, each of which has the same sets of organs and, in most, a pair of parapodia that many species use for locomotion.', 'Segmented worms have a well-developed body cavity filled with fluid.']
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['Competition & Predation.', 'Commensalism.', 'Parasitism.', 'Mutualism.', 'Amensalism.']
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['Competition & Predation. Predation is when one organism eats another organism to obtain nutrients. ... ', 'Commensalism. ... ', 'Parasitism. ... ', 'Mutualism.']
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As nouns the difference between earthworm and flatworm is that earthworm is a worm that lives in the ground while flatworm is any of very many parasitic or free-living worms, of the phylum platyhelminthes , having a flattened body with no skeleton or body cavity.
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['Symmetry and Size. Annelids are all bilaterally symmetrical animals. ... ', 'Coelom. ... ', 'Body wall. ... ', 'Parapodia. ... ', 'Nervous system. ... ', 'Sense organs. ... ', 'Circulation and respiratory structures. ... ', 'Segmental organs.']
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The main difference between Worm and Insect is that the Worm is a animal that typically has a long tube-like body and no legs and Insect is a class of invertebrates. ... Insects have 3 body segments (head, abdomen and thorax) and 6 legs with 2 antennae. Annelid worms have many segments, no legs, no antennae.
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Answer and Explanation: Worms are heterotrophs rather than autotrophs. Heterotrophs are organisms that gain their needed nutrients by consuming other organisms rather than...
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No. Worms are invertebrates and snakes are vertebrates. No, not related at all, worms are from the class “annelidiea” and snakes from Vertebrata.
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The features that distinguish flatworms from worms in other phyla include their flat body, their primitive digestive cavity with only one opening, and their lack of a body cavity, or coelom.
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Flatworms are bilaterally symmetrical organisms, with three germ layers (ectoderm, endoderm, and mesoderm) but lack a body cavity or coelom. The nervous, digestive, muscular, excretory, and reproductive systems are more advanced than those of the phyla you have already looked at.
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['They are widely distributed, aquatic or terrestrial, parasitic or free-living.', 'Their body is elongated, cylindrical, unsegmented, worm-like, bilaterally symmetrical and tapering at both ends.', 'They are triploblastic animals with perivisceral cavity more extensive than that of platyhelminths.']