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In Prawn, excretion is carried out by Nephrons Malpighian tubules Flame cells Green glands

Question

In Prawn, excretion is carried out by

  • Nephrons
  • Malpighian tubules
  • Flame cells
  • Green glands
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Solution

In prawns, excretion is primarily carried out by Green glands, also known as antennal glands. These glands are located at the base of the antennae and function similarly to kidneys in vertebrates. They help in the removal of waste products from the prawn's body, as well as in osmoregulation, which is the regulation of salt and water balance.

To detail the mechanisms involved, the green glands filter hemolymph (the prawn equivalent of blood) and produce a filtrate that contains waste products. This filtrate then exits the body through a duct that opens to the exterior. This system is efficient in aquatic environments, allowing prawns to manage not only nitrogenous wastes but also to maintain proper levels of ions and water in their internal systems.

In contrast, the other options listed (nephrons, Malpighian tubules, and flame cells) are associated with different organisms. Nephrons are found in vertebrates, Malpighian tubules in insects, and flame cells in flatworms. Thus, the correct answer for excretion in prawns is indeed the green glands.

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