Hydroponics is growing plant in:

Question

Accepted Answer

The correct option is 2:

Hydroponics is an innovative method of growing plants without soil. Instead of relying on soil, plants are grown in an inert medium, such as perlite, rockwool, or coco coir, and their roots are directly supplied with a carefully balanced solution of mineral nutrients dissolved in water. This nutrient solution provides all the essential macro- and micronutrients that a plant needs for healthy growth, eliminating the need for soil as a nutrient source. The term "hydroponics" itself comes from the Greek words "hydro" (water) and "ponos" (labor), literally meaning "water labor." This technique allows for precise control over nutrient delivery, water usage, and environmental conditions, leading to faster growth, higher yields, and more efficient resource use compared to traditional soil-based agriculture.

The incorrect option is 1:

Tissue culture medium is used for growing plant cells, tissues, or organs in a sterile laboratory environment, not for growing whole plants in a hydroponic system. While both involve controlled environments and nutrient solutions, tissue culture is a micropropagation technique for producing many identical plants from a small piece of plant material, often for research or commercial propagation.

The incorrect option is 3:

Soil culture refers to the traditional method of growing plants in soil. This is the opposite of hydroponics, which specifically focuses on soilless cultivation. In soil culture, plants derive their nutrients from the soil, which can be variable in its composition and often requires amendments and fertilizers.

The incorrect option is 4:

While water is a crucial component of a hydroponic system, simply growing plants in "water" alone is not accurate. Plants require specific mineral nutrients for growth, which are dissolved in the water to create the nutrient solution. Pure water lacks these essential nutrients, and plants grown in it would suffer from nutrient deficiencies and ultimately fail to thrive. Therefore, it's the *solution of mineral nutrients* in water that defines hydroponics, not just water itself.