Adventitious roots of $Pistia$ are helpful in

The calyptrogen of the root apex forms

White spongy floating roots occur in

In which plants are pneumatophores found?

Plants like $Rhizophora$ and $Avicennia$ grow on the sea shores under saline conditions. For this,they have special roots for respiration which are called:

Stilt roots are found in . . . . . . .