The figure given below shows $..............$.

Hydroponics is a method of

$I.$ The practice of growing plants in nutrient-enriched water without soil is called....
$II.$ The system of growing plants with their roots bathed in nutrient mist (a cloud of moisture in air) is called....
Complete the given statements ($I$ and $II$) with the correct pair of options given below.

Hydroponics has been successfully employed as a technique for the commercial production of......

Which one of the following scientists used the nutrient culture solution in hydroponic cultures?

Soilless culture helps in knowing: