Table of Contents
How do flatworms remove waste?
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.
How do flatworms perform excretion and osmoregulation?
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.
What is the excretory organ of flatworms?
The excretory organs of Flatworms / Taenia are flame cells. Flame cells function like a kidney. They are cup-shaped. It is mainly concerned with excretion as well as osmoregulation.
What form of nitrogenous waste is excreted by flatworms?
Aquatic invertebrates primarily excrete their nitrogenous waste in the form of ammonia, a highly toxic waste product of amino acid catabolism.
What is the body type of flatworms?
Flatworms’ bodies are bilaterally symmetrical and they have a defined head and tail region. They have a central nervous system containing a brain and a nerve cord. Clusters of light-sensitive cells on either side of their head make up what are called eyespots.
What happens if excretory materials are not removed from your body?
If these wastes are not removed, your cells can stop working, and you can get very sick. The organs of your excretory system help to release wastes from the body. The organs of the excretory system are also parts of other organ systems. For example, your lungs are part of the respiratory system.
What do humans and flatworms have in common?
Like humans, flatworms are bilateral: Their body plans are symmetric. The team’s research proved that these flatworms represent the first creatures to split from a long-dead ancestor common to all bilateral animals.
Why do flatworms move smoothly?
Flatworms move using their cilia or by contracting the muscles in their body. Some flatworms have oblique layers of muscles that run lengthwise and in…
What do flatworms use Protonephridia for?
Protonephridia are generally found in basal organisms such as flatworms. 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.
What is the excretory organ in housefly?
Answer: Malpighian tubes are excretory organs in (b) house fly.
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).
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.