$A$ tissue with spiral thickening in the cell wall capable of absorbing water from air is known as

In the root,the maximum growth occurs:

The outer covering of an epiphytic root is

Draw a labelled diagram showing various regions of a root.

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

Match the following:

Column-$I$	Column-$II$
$(a)$. Cuscuta	$(i)$. Hygroscopic root
$(b)$. Rhizophora	$(ii)$. Stilt root
$(c)$. Vanda	$(iii)$. Haustorial root
$(d)$. Pandanus	$(iv)$. Respiratory root