Which specialised cells help in osmoregulation of platyhelminthes?
Last Update: October 15, 2022
This is a question our experts keep getting from time to time. Now, we have got a complete detailed explanation and answer for everyone, who is interested!
Asked by: Lazaro Mayer
Score: 4.6/5 (42 votes)
Hint: A flame cell is a specialized excretory cell found in the simplest freshwater invertebrates, including flatworms, rotifers, and nemerteans. Bundles of flame cells are called Protonephridia. Complete answer: Protonephridia helps in osmoregulation or ion-regulation.
Which cells do the flatworms have for excretion?
(2) Flatworms have an excretory system that consists of two tubules. The cells in the tubules are called flame cells; they have a cluster of cilia that propel waste matter down the tubules and out of the body.
What is osmoregulation in Platyhelminthes?
Abstract. In flatworms, excretion is accomplished by the epithelial lining of the gut, by the body wall, by exocytosis of vesicles, and by protonephridia. Osmoregulation in flatworms has not been demonstrated conclusively, but is thought to take place in the protonephridia.
Does flame cells help in osmoregulation?
A paired protonephridial system composed of tubules and flame cells functions in excretion of nitrogenous wastes and osmoregulation in all rotifers (Figures 13.1–13.2).
What kind of cells help in osmoregulation and excretion in Platyhelminthes?
Note: Molecules enter the tubule in tube cells through the gap present between the flame cell and tube cell for excretion. Flame cells are ciliated cells which form a part of the excretory as well as osmoregulatory systems of Platyhelminthes, rotifers, and nemertine worms.
Which specialised cells helps in osmoregulation of platyhelminthes ?
Does Nephridia help in osmoregulation?
Complete answer: > Excretion and osmoregulation is done with help of Nephridia in earthworms. ... Excretion and osmoregulation is done with the help of Malpighian tubules in cockroaches.
Why Platyhelminthes are called flatworms?
Worms in the phylum Platyhelminthes are called flatworms because they have flattened bodies. ...
Do flatworms have flame cells?
Flame cells are found in freshwater invertebrates, such as flatworms, including parasitic tapeworms and free-living planaria.
What is the function of flame cells in flatworms?
A flame cell is a specialized excretory cell found in the simplest freshwater invertebrates, including flatworms, rotifers and nemerteans; these are the simplest animals to have a dedicated excretory system. Flame cells function like a kidney, removing waste materials.
Are Solenocytes and flame cells the same?
In biology, solenocytes are flagellated cells associated with excretion, osmoregulation and ionoregulation in many animals and in some chordates under the sub-phylum Cephalochordata. ... Flame cells can be distinguished from solenocytes as the former is usually ciliated whereas the latter is flagellated.
What cells do Platyhelminthes have?
The mesodermal tissues include mesenchymal cells that contain collagen and support secretory cells that secrete mucus and other materials at the surface. The flatworms are acoelomates, so their bodies are solid between the outer surface and the cavity of the digestive system.
What are the 3 classes of Platyhelminthes?
The Platyhelminthes includes three classes: the Turbellaria (free-living flatworms), the Trematoda (flukes), and the Cestoda (tapeworms).
What is the role of Protonephridia in osmoregulation?
Protonephridia likely first arose as a way to cope with a hypotonic environment by removing excess water from the organism (osmoregulation). Their use as excretory and ionoregulatory structures likely arose secondarily. These are excretory systems in phyla Platyhelminthes and are also called blind tubules.
How do flatworms reproduce?
Flatworms are hermaphroditic (having both male and female sex organs) and they typically reproduce both sexually and asexually. The majority of sexual reproduction is through cross-fertilization (where both individuals fertilize each other).
Can a flatworm detect touch?
Auricles contain concentrations of nerve cells. These nerves are sensitive to both touch, moisture and certain chemicals. The angled projections increase the surface area for these nerves and allow the flatworm to distinguish which side the stimulus is coming from.
What is the name of excretory structures of flatworms?
Many invertebrates such as flatworms use a nephridium as their excretory organ.
What is the function of Parapodia and flame cells?
While a flame cell refers to a unique excretory cell found in the platyhelminths. These cells work like a kidney, withdrawing waste components. Both the nephridia and flame cells possess the functions of excretion and osmoregulation.
Do sponges have flame cells?
This is possible because like sponges, the vast majority of their cells are in contact with the environment. ... They have what are termed “flame cells” (or “protonephridia”) located all along two highly-branched tubules that run the length of the body.
What do flatworms excrete?
Flatworms have an excretory system with a network of tubules throughout the body that open to the environment and nearby flame cells, whose cilia beat to direct waste fluids concentrated in the tubules out of the body. The system is responsible for regulation of dissolved salts and excretion of nitrogenous wastes.
Are human kidneys 1 million Nephridia?
Deoxygenated blood is poured into right atrium of heart. The excretory units of flatworms are flame cells. Human kidney has about 1 million nephridia. Tracheids and vessels are non -living conducting tissues.
How does amoeba remove waste?
Amoeba possess osmo-regulatory organelle called contractile vacuole. This collects water and waste from the body,swells up,reaches the surface and bursts to release its content to outside. The main excretion takes place through body surface by the process of osmosis. Thus,waste products are exceed in amoeba.
What is a flame cell Multiple Myeloma?
Flame cells are atypical plasma cells with irregular cytoplasmic projections that stain bright purple-red with Wright-Giemsa stain. They are usually associated with IgA myeloma but may be seen in non-IgA myelomas, MGUS, as well as reactive plasmacytosis.
Why Platyhelminthes are called Pseudocoelomate?
There are actually three types of body forms: coelomates, acoelomates and pseudocoelomates. ... The pressure of their fluid-filled cavity against their body wall gives coelomates and pseudocoelomates their round shape. Therefore, no fluid-filled cavity means no round shape; thus, the flatworm.
Which group of animals is called flatworms?
Animals belonging to the phylum Platyhelminthes are also called flatworms due to dorsoventrally flattened bodies.
Why must flatworms be flat?
The lack of a cavity also constrains flatworms to be flat; they must respire by diffusion, and no cell can be too far from the outside, making a flattened shape necessary.