Oxygen helps roots breathe and absorb nutrients. Without oxygen, roots rot and plant growth slows. Hydroponic systems use air pumps or moving water to supply oxygen for healthy, strong root development.
Class 8 Vocational Education Chapter 1 Hydroponics: Growing Plants without Soil question answer
Class 8 Vocational Education Textbook Work with Life Forms Chapter 1 Hydroponics Growing Plants without Soil question answer
Plant roots need oxygen for respiration, which helps absorb nutrients and release energy. In soil, air naturally surrounds roots, but in water, oxygen must be provided. In hydroponics, aerators or flowing water systems (like DWC or NFT) ensure roots don’t suffocate. Without enough oxygen, roots turn brown, rot and plants become weak. Supplying air to water is essential for healthy, fast-growing hydroponic plants with strong roots.