(I) The cotyledons of Mouriria have trichosclereids
(II) Young sieve elements possess cytoplasm without nucleus
(III) Cells of pericycle in dicot root are capable of dedifferentiation
(IV) Cork lacks stomata but yet performs gaseous exchange.
$\begin {array} {1 1} (1)\;(I),(II) & \quad (2)\;(II),(III) \\ (3)\;(III),(IV) & \quad (4)\;(II),(IV) \end {array}$
