If a primary root continues to grow,the type of root system will be known as

In $Pandanus$ $(Screw\, Pine)$,the root cap is:

Stilt roots are reported from

Pneumatophores occur in

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

The origin of root hairs and lateral roots is