Velamen is present in

Pneumatophores are found in ..........

What is the most efficient region of water absorption in roots?

Select the correct statements.
$I$. From the region of elongation,some of the epidermal cells form root hairs.
$II$. Pneumatophores are seen in $Rhizophora$.
$III$. Adventitious roots are seen in the banyan tree.
$IV$. Maize and sugarcane have prop roots.

In many epiphyte $(Orchid)$ plants,which tissue is present in the cortex of the root and helps in water uptake?

The radish is an example of ..........