Asafoetida (Hing) is obtained from Ferula asafoetida. What is it?

The roots that originate from the base of the stem are:

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.

The edible part of a sweet potato is:

An obligate root parasite is:

The root system in a plant is well developed: