What are 5 characteristics of phylum Platyhelminthes?
Characteristic features of Phylum Platyhelminthes
- Their body is dorsoventrally flattened.
- They exhibit bilateral symmetry.
- Also, they are triploblastic, with three germ layers.
- They do not have a body cavity and are acoelomate.
- The body is soft and unsegmented.
- They are mostly parasitic with a few free-living.
What are the 3 classes of phylum Platyhelminthes?
Phyla Platyhelminthes and Nemertea. The Platyhelminthes includes three classes: the Turbellaria (free-living flatworms), the Trematoda (flukes), and the Cestoda (tapeworms).
What class is Platyhelminthes?
Platyhelminthes are traditionally divided into four classes: Turbellaria, Monogenea, Trematoda, and Cestoda. The class Turbellaria includes mainly free-living, marine species, although some species live in freshwater or moist terrestrial environments.
What are the general characteristics of phylum Platyhelminthes with example?
Characteristics of Platyhelminthes They are triploblastic, acoelomate, and bilaterally symmetrical. They may be free-living or parasites. The body has a soft covering with or without cilia. Their body is dorsoventrally flattened without any segments and appears like a leaf.
What organisms belong to the phylum Nematoda?
Roundworms, hookworms, and heartworms are all members of phylum Nematoda, and they are all common canine maladies. Most dogs will become infected with at least one species of nematode at some point in their life.
What phylum does tapeworm belong to?
phylum Platyhelminthes
tapeworm, also called cestode, any member of the invertebrate class Cestoda (phylum Platyhelminthes), a group of parasitic flatworms containing about 5,000 species.
What phylum do earthworms belong to?
phylum Annelida
earthworm, also called angleworm, any one of more than 1,800 species of terrestrial worms of the class Oligochaeta (phylum Annelida)—in particular, members of the genus Lumbricus.
Which is the largest group of Animalia?
phylum Arthropoda
The phylum Arthropoda is the largest phylum or group of animals in the Kingdom Animalia.
What phylum do arthropods belong to?
arthropod, (phylum Arthropoda), any member of the phylum Arthropoda, the largest phylum in the animal kingdom, which includes such familiar forms as lobsters, crabs, spiders, mites, insects, centipedes, and millipedes.
What are the four major classes of phylum Platyhelminthes?
Turbellaria
What phylum contains tapeworms?
– The Skin. tough outer covering that. protects against host’s digestive juices. – Heterotrophic. live on other living things in which they depend on for food. – Sessile. cannot move on their own. – Body Segments. Scolex (head) has several suckers.
Does the phylum Platyhelminthes have a circulatory system?
The Phylum Platyhelminthes has 25,000 different species and each one of these species do not contain a circulatory system. The reason that Platyhelmithes do not have a circulatory system throughout their bodies is because these animals still rely on diffusion for much exchange of gasses, nutrients, and waste.
What phylum contains planarians?
planarian, (class Turbellaria), any of a group of widely distributed, mostly free-living flatworms of the class Turbellaria (phylum Platyhelminthes). Planaria is the name of one genus, but the name planarian is used to designate any member of the family Planariidae and related families.