Respuesta :
the purpose of protonephridia in flatworms is To regulate fluid balance
Protonephridia are groups of flame cells. A flame cell is a type of excretory cell observed in relatively simple freshwater invertebrates, such as flatworms, rotifers, and nemerteans; these are the only animals with a dedicated excretory system. Flame cells operate like a kidney, expelling waste materials.
Flatworm, also known as platyhelminth, any member of the phylum Platyhelminthes are a bunch of soft-bodied, flattened invertebrates.
The role of the protonephridia is the same as that of most excretory organs: after ultra filtration, substances from the lumen are reabsorbed in a more or less selective manner. The large surface area of the channel cell aids in reabsorption.
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Complete question :
What is the purpose of protonephridia in flatworms?
To exchange gas
To serve as a structure for sexual reproduction
To sense prey
To respond to stimuli
To regulate fluid balance
