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Why can waterlogged soil be harmful for plants?

Answer and explanation

Correct answer: Roots get less air

The direct answer is A: waterlogged soil gives roots less air. Plants need water, but roots also need oxygen for respiration. When soil pores fill completely with water, air is pushed out. Oxygen then reaches the roots poorly, so root respiration, nutrient absorption and healthy growth can suffer. Some specially adapted plants tolerate wet conditions, but ordinary plants may be damaged. A is therefore correct. B is unrelated: waterlogging does not necessarily increase sunlight. C is impossible; soil does not become gold. D is also unrelated and false: waterlogging does not make rainfall end. The exact chain is water fills soil spaces, air decreases, root oxygen falls, and roots may weaken or rot. Memory cue: healthy roots need both water and air; too much water removes air.

Related tags

WaterloggingSoilRoot Damage

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