Question

Carefully observe the following figure:


a. Name the technique shown in the figure and the scientist who demonstrated this technique for the first time.

b.Name at least three plants for which this technique can be employed for their commercial production.

c.What is the significance of aerating tube and feeding funnel in this setup?

Answer 1

a. Hydroponics:

The method of growing plants in a nutrient medium without soil is called hydroponics. The nutrient medium contains all the essential elements required for the growth of the plant.

Scientist behind hydroponics:

The technique of hydroponics was demonstrated by Julius von Sachs (a prominent German botanist) in 1860, for the first time.


Final answer:

Hydroponic; Julius von Sachs

b. Plants grown by hydroponics:



Hydroponics is used to grow a number of commercial plants like tomato, lettuce and seedless cucumber.

Final answer:

Tomato, lettuce, seedless cucumber

c. Use of aerating tube and feeding funnel:

The aeration tube is required for proper aeration of the hydroponics setup. The aerating tube provides oxygen supply in the nutrient solution as roots are living and require oxygen for their metabolic processes. It also ensures that the nutrients get evenly dispersed in water and circulate properly.

Use of feeding funnel:

The feeding funnel is used to add nutrients and water to the hydroponics setup. It replenishes the growing plant parts with water and nutrients.

Final answer:

Providing substances to plants for optimum growth (Aerating tube: Air Feeding funnel: Nutrients, water)