What cells help In osmoregulation In platyhelminthes? 

The correct answer is Flame cells.

Key Points

• Flame cells are specialized cells that form part of the excretory system in these organisms, known as protonephridia.
• Flame cells play a primary role in osmoregulation, the process by which a balance of water and ions is maintained within the body.
• Along with osmoregulation, flame cells also help in the removal of waste products.
• This system is not only found in Platyhelminthes but also in other types of flatworms and invertebrates. However, it is most prominent in Platyhelminthes.

Additional Information

• Nerve cells:
  • Platyhelminthes have a decentralized nerve cell network and two longitudinal nerve cords running along their body length.
  • These nerve cells, also known as neurons, are responsible for transmitting signals across the organism.
  • They enable sensing the environment and coordinating the organism's response to it.
• Ganglia:
  • Ganglia are simple forms of "brains" or collections of nerve cell bodies that process information in invertebrates such as Platyhelminthes.
  • They serve as the central nervous system in these organisms, acting as control centres that coordinate nerve signals.
• Hooks:
  • Some Platyhelminthes, specifically parasitic ones, have hooks and suckers.
  • These structures are not cells, but adaptations that help the worm to attach to the host's tissue.
  • The hooks assist in anchoring the parasite to its host and facilitate the feeding process.