Water makes up approximately _____ percent of a plant's weight.

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Multiple Choice

Water makes up approximately _____ percent of a plant's weight.

Explanation:
Water content dominates a plant’s fresh weight; most plant tissues are largely hydrated, with about nine-tenths of the mass being water. That means when you measure a fresh sample, roughly 90% of its weight is water and the remaining ~10% is dry matter. This is why drying a sample drastically reduces its weight to about a tenth of the fresh weight. While tissue-to-tissue variation exists, 90% is the standard general estimate used in horticulture to reflect how hydrated fresh plant material typically is. Figures like 70% or 80% would indicate notably less water than usual, and 95% would be unusually high, though not impossible for some tissues; the common teaching point is that about 90% of a plant’s fresh weight is water.

Water content dominates a plant’s fresh weight; most plant tissues are largely hydrated, with about nine-tenths of the mass being water. That means when you measure a fresh sample, roughly 90% of its weight is water and the remaining ~10% is dry matter. This is why drying a sample drastically reduces its weight to about a tenth of the fresh weight. While tissue-to-tissue variation exists, 90% is the standard general estimate used in horticulture to reflect how hydrated fresh plant material typically is. Figures like 70% or 80% would indicate notably less water than usual, and 95% would be unusually high, though not impossible for some tissues; the common teaching point is that about 90% of a plant’s fresh weight is water.

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