Question

Choose between the two options to answer the question specified in the brackets for the following. An example is illustrated.
Example: Corolla or Calyx (Which of the outer whorl?) Answer: Calyx
Blood in the renal artery or renal vein (Which one has more urea?)

Answer 1

Renal artery carries blood to the kidney whereas the renal vein carries blood away from the kidney. As the kidney filters the blood, renal vein which carries blood away has less urea concentration than the renal artery.