Question

An adaptation in the structure and function of loop of Henle to xerophytic environment is

• A. A short loop of Henle, which allows more filtrate to be removed from the blood
• B. A short loop of Henle, which allows less water to be removed from the filtrate
• C. A long loop of Henle, which allows more filtrate to be removed from the blood
• D. A long loop of Henle, which allows more water to be removed from the filtrate
• E. A long loop of Henle, which allows less filtrate to be removed from the blood

Answer 1

The correct option is D A long loop of Henle, which allows more water to be removed from the filtrate

An adaptation in the structure and function of loop of Henle to xerophytic environment is that they have a very long loop of Henle, which allows more water to be removed from the filtrate. The climate in these regions are dry and hot. The principal function of the loop of Henle appears to be the recovery of water and sodium chloride from the urine. The liquid entering the loop is the solution of salt, urea, and other substances passed along by the proximal convoluted tubule, from which most of the dissolved components needed by the body. Particularly glucose, amino acids, and sodium bicarbonate have been reabsorbed into the blood. Many species that live in arid environments such as deserts have highly efficient loops of Henle.

Thus, the correct answer is option D.