Table of Contents
Is a flatworm a parasite?
flatworm, also called platyhelminth, any of the phylum Platyhelminthes, a group of soft-bodied, usually much flattened invertebrates. A number of flatworm species are free-living, but about 80 percent of all flatworms are parasitic—i.e., living on or in another organism and securing nourishment from it.
What is the scientific name for Turbellaria?
Turbellaria
Turbellaria/Scientific names
What are the simple eyespots in Turbellarians called?
48 Cards in this Set
| When the adult of a descendant species resembles the larval form of the ancestral species, this is… | Paedomorphosis |
|---|---|
| Chemoreceptors that aid in the location of food are especially dense in the __________ of turbellarians. | Auricles |
| The simple eyespots seen in most turbellarians are called… | Ocelli |
What is an example of Monogenea?
Gyrodactylus
Gyrodactylidae
Monogenea/Lower classifications
Some examples of the Class Monogenea include: Gyrodactylus salaris. Diclidophora nezumiae. Diplozoon paradoxum. Dactylogyrus vastator.
What are Proglottids?
Definition of proglottid : a segment of a tapeworm containing both male and female reproductive organs.
Is porifera parasitic?
Sponges are at a cellular level of organization and thus do not have organs or even well-developed tissues;… Some organisms that live on (called epibionts) and in (called endobionts) sponges act as parasites. The most important symbiotic associations of sponges occur with single-celled and multicellular algae.
What is absent in the members of phylum Platyhelminthes?
They do not have a body cavity and are acoelomate. The body is soft and unsegmented. They exhibit an organ system grade of organization. The digestive system is incomplete or absent.
What is classification of Turbellaria?
Are there any parasitic infections of the circulatory system?
Some protozoa and parasitic flukes are also capable of causing infections of the human circulatory system. Although these infections are rare in the US, they continue to cause widespread suffering in the developing world today. Fungal infections of the circulatory system are very rare.
What is the circulatory system of an invertebrate?
In invertebrates, the circulatory system is a network of channels and spaces in the connective tissue, which is continuous around and between all epithelial layers of the body. Invertebrate blood or haemal channels range widely in size.
Which is the simplest of all the invertebrates?
The simplest of all the invertebrates, Porifera (sponges) do not display tissue-level organization, although they do have specialized cells that perform specific functions. Sponge larvae are able to swim; however, adults are non-motile and spend their life attached to a substratum.
Why are smaller animals without a circulatory system?
In smaller animals, transporting materials diffuse readily through the intercellular spaces, so no circulatory system is required for their transport. Even larger animals may lack a definite circulatory system because of their primitive organization or low rate of metabolism.