(I) Linear growth - Intercalary meristem - Leaf base of grass plant
(II) Aerenchyma - Buoyancy - Bryophyllum
(III) Trichosclereids - Isodiametric in shape - Aerial roots of monstera
(IV) Water stomata - Guttation - Root pressure
The correct answer is
$\begin {array} {1 1} (1)\;(II),(III) & \quad (2)\;(II),(IV) \\ (3)\;(I),(IV) & \quad (4)\;(I),(III) \end {array}$
