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Why is the presence of water in soil necessary for plants?

Answer and explanation

Correct answer: For the absorption and transport of mineral salts

Water in soil is essential because it dissolves mineral salts and makes them available for absorption by plant roots. Root cells take up this soil solution, and the water helps carry minerals through the plant in conducting tissues. Water is also needed for photosynthesis, cell firmness, growth, and many chemical reactions, but the option specifically asks about the role connected with mineral salts. Without enough soil water, nutrients may remain present in the soil but cannot move readily into the roots.

Therefore, option B is correct. Supporting roots is important, but water is not present only for physical support. It acts as a solvent and transport medium for minerals. Changing leaf colour is not its basic purpose, and saying that water is unnecessary is false. The supplied answer correctly focuses on absorption and transport of dissolved mineral salts, while the broader functions explain why adequate soil moisture is vital for healthy plants.

Related tags

Soil-WaterMinerals

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