Indian-corn (maize) is a native of

$A$ cultivated plant whose seed epidermis produces abundant cellulosic hairs used in the textile industry and the manufacture of fine-quality paper is:

Children who urinate in sleep (bedwetting) are treated using the leaves of which plant?

Name the plant whose leaves are economically important and earn foreign exchange.

What is the use of Guayule $(Parthenium argentatum)$?

Heroin is obtained from the plant of