Question

The technique of hydroponics used for growing plants does not require

• A. The element must be directly involved in the metabolism of the plant
• B. The element must be absolutely essential for growth and reproduction
• C. The requirement of the element is specific and cannot be replaced by another element
• D. All of these

Answer 1

The correct option is D

All of these

The correct option is D.

Explanation of the correct option:

1. Hydroponics is the method by which plants are grown without soil.
2. This method is also referred to as soil-less agriculture, test-tube farming, etc.
3. The technique of hydroponics is used to know which mineral element is essential for the growth and development of plants.
4. Certain elements are essential for the growth and development of plants.
5. These elements are directly involved in the metabolism of the plant.
6. These are essential for the plants and the requirement of these elements is necessary.
7. These elements cannot be replaced by another element.
8. In hydroponics, plants develop in water culture having a balanced nutritional composition depending on the specific requirements of the plants grown.

Final answer: The technique of hydroponics used for growing plants does not require all of the above.