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Which of the following type of nephrons are prominently present in the desert mammals?

(a) Cortical nephrons

(b) No nephrons are present

(c) Medullary nephrons

(d) Juxta-medullary nephrons

I have been asked this question by my college professor while I was bunking the class.

Question is taken from Urine Formation in chapter Excretory Products and Elimination of Biology – Class 11

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Right choice is (d) Juxta-medullary nephrons

Explanation: In desert mammals, juxtamedullary nephrons are present because they have a very long loop of Henle which helps in the reabsorption of water as more as possible.

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