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Flatworms
The phylum Platyhelminthes (aka flatworms) are rather primitive invertebrates that can be either parasitic or non-parasitic depending upon the species. They have no body cavity, no circulatory organs and no respiratory organs. Questions about flatworms can be asked and answered here.
383 Questions
What are the special characteristics about flatworms?
1)Bilaterally symmetrical.
2)Body having 3 layers of tissues with organs and organelles.
3)Body contains no internal cavity.
4)Possesses a blind gut (i.e. it has a mouth but no anus)
5)Has Protonephridial excretory organs instead of an anus.
6)Has normally a nervous system of longitudinal fibres rather than a net.
7)Generally dorsoventrally flattened.
8)Reproduction mostly sexual as hermaphrodites.
9)Mostly they feed on animals and other smaller life forms.
10)Some species occur in all major habitats, including many as parasites of other animals.
species of schistosomes . Schistosoma mansoni is widespread in Africa, the Eastern-Mediterranean, the Caribbean, and South America and can only infect humans and rodents.
What kind of symmetry do flatworms have?
Flatworms have bilateral symmetry. Bilateral symmetry means the animal has symmetry across one plane (known as the sagittal plane, and directly down the centre of their body), which means one side of their body approximately mirrors the other side.
How long does a flatworm live?
Are you asking: "how long does a flatworm live?"
If so, this is not an answerable question--there are too many types of flatworms to make a generalization.
I personally know of one type of flatworm which can re-generate--cut off any part of it's body, and that part will re-generate. As long as the head remains attached, the re-generation can take place.
I did a science project using freshwater planarians, where I explored this phenomenon.
Is heartworm caused by flatworms?
No, a heartworm is worm that slowly...eats(one way to put it) the heart of any animal or human. a roundworm doesnt really cause much harm. Its a worm that takes the shape of a circle undera small bit of skin. its visual
What are 5 examples of a flatworm?
Flatworms - classified as having a flat leaf or flat ribbon shaped body and a pair of eyes up front. Most are parasitic.
Examples of the flatworm include Tricladida, flukes, and tapeworms.
Roundworms (aka nematodes) - has over 80,000 species which many of are parasitic. They have round bodies of varied sizes.
Examples of the roundworm include whipworms, hookworms, and pinworms.
Segmented Worms - As their name describes, their bodies are divided into segments.
Examples of the segmented worm include the bristle worm and earthworms.
No flatworms do NOT have nostrils they have eyes and the ability to regenerate damaged parts of their body but no nostrils.
No, flatworms are from the phylum Platyhelminthes, while worms are from the phylum Annelidia. Worms are more developed and have a coelum, while flatworms have no coelum at all.
What do flatworms roundworms and segment worms have in common?
flatworms arent round but flatworms look like pancakes. they both belong to the invertabre group and have similar internal organs.
What are the medical importance of flatworms?
Flatworms are important to nature as they can be an indicator of changes in the habitat because they are sensitive to water and indicate reduced oxygen, among other things. They are also important because the ecosystem is based on all living creatures and the flatworms eat the tiny plans and animals that go unseen and then when they are eaten by fish or aquatic insects the base of the food chains that the flatworms ate then become part of the larger ecosystem food chain.
Compare and contrast the body of a flatworm to the body plan of a roundworm?
Flatworms are considered acoelomate, since they have no body cavity, and roundworms are pseudocoelomate because they have a body cavity, but it is not derived from the splitting of the mesoderm tissue.
Also, flatworms only have one opening in their digestive system unlike roundworms with two.
Yes, flat worms do have true tissues since they posses a mesoderm and are tripoblastic bacause of this.
However, these organisms do not posses a body cavity and no specialized circulatory or respiratory organs.
What does the leopard flatworm eat?
they are consumer or predators and they are parasitic like tapeworms and flukes
What class do flatworms belong to?
They belong to any class that are under the phylum platyhelminthes.
Why does cutting a flatworm into pieces not kill it?
In gereral, the more poorly differentiated (the fewer complex structures that have specific functions) an organism is, the greater its ability to live and re-grow after being cut apart. Worms have this ability to re-grow in entirety, as do lower organisms like amoebas and fungi. In flatworms, their cells have the ability to differentiate into any type of tissue that the worm might need. These types of cells are called stem cells, and are the subject of ongoing research in medicine as to their applications in humans. There is a limit, however. a tiny slice of flatworm would not be able to develop into another worm.
