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There are three classes in the platyhelminthes phylum. These classes include Turbellaria, Monogenea, and Trematoda. These classes still break down into orders, families, genus, and species. I'm still looking for the rest.

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Q: How many subgroups are in the platyhelminthes phylum?
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In what phylum is the marine flatworm?

platyhelminthes


What is the most common name for flatworms?

The flatworm's scientific name (or at least its Phylum) is Platyhelminthes. I can't give you the real scientific name (which is the genus and species) because there are more than one species of flatworm.


What kingdom does annelida belong to?

A planaria belongs to the phylum Platyhelminthes.


Does a flatworm have a tissue-organ grade of organization?

Flatworms are usually categorized under the phylum Platyhelminthes.


How are the criteria for deciding divisions in plants different from the criteriafor deciding the subgroups among animals?

Criteria for deciding divisions in plants are:(i) Differentiated/ Undifferentiated plant body(ii) Presence/ absence of vascular tissues(iii) With/without seeds(iv) Naked seeds/ seeds inside fruitsCriteria for deciding subgroups among animals are:Kingdom Animalia is divided into two major groups on the basis of the presence or absence of a notochord.Non-chordates do not possess a notochord, while all members of the phylum chordates possess a notochord.Non-chordate is further divided into subgroups on the basis of the following features:On the basis of the above features, non-chordates are divided into the following subgroups: Porifera, Coelenterate, Platyhelminthes, Nematodes, Annelids, Molluscs, Arthropoda, and Echinodermata.All members of the phylum chordate possess a notochord. However, some animals such as Balanoglossus, Amphioxus, Herdmania,etc. have a notochord, which is either absent or does not run the entire length of the animal's body. Therefore, these animals are kept in a separate sub-phylum called Protochordata, and the rest of the chordates are included in the sub-phylum vertebrata. The members of the sub-phylum vertebrata are advanced chordates. They are divided into five classes: Pisces, Amphibian, Reptilia, Aves, and Mammalia.