Body Fluids and Circulation — BIOLOGY STD 11 Science — Question

$I$. 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

Column $-I$                                             Column $-II$

$(a)$ $6-15$ pairs of gill slits                   $(i)$ Trygon

$(b)$ Heterocercal caudal fin                   $(ii)$ Cyclostomes

$(c)$ Air Bladder                                      $(iii)$ Chondrichthyes

$(d)$ Poison sting                                    $(iv)$ Osteichthyes