Photosynthesis in Higher Plants — BIOLOGY STD 11 Science — Question

$R :$ The loop of Henle is responsible for the formation of a sodium gradient across the depth of the medullary intersitium of a mammalian kidney

$I$. they are nucleated

$II$. they are denucleated like $RBC$

$III$ they are $6000-8000 \;m m ^{-3}$ of blood

$IV$. they are long lived

$V$, they are short lived

Choose the appropriate option with correct properties