Question

The main function of loop of Henle is the reabsorption of water from the contents of renal tubules. In which of the following, the loop of Henle are poorly developed or even absent?

• A. Desert mouse
• B. Carnivorous bird
• C. Freshwater fish
• D. Garden bladder

Answer 1

The correct option is C Freshwater fish

Loop of Henle or Henle's Loop or Nephron loop is found in the kidney. It is a portion of the nephron which leads from the proximal convoluted tubule to the distal convoluted tubule. This process that is carried out by the Henle's loop leads to reabsorbing of water which results in the generation of concentrated urine. The kidneys of fish especially freshwater fish are narrow, elongated organs and occupy a significant portion of the trunk and actively transport the ions across gills. The Loop of Henle is therefore either poorly developed or absent.

Therefore, the correct answer is option C.