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Why vacuole is not present in animal cells?Plz reply urgent.
It is not so always. Vacuoles may be present in animals. But as compared to plants they are small and temporary in animal cell. In plants, vacoules tend to be large and plays a role in turgor pressure. When a plant is well watered, water collects in cell vacoules, producing rigidity in the plant. Without sufficient water, pressure in the vacoule is reduced and the plant wilts. Besides,if present in animal cell,they are concerned with secretion and excretion in that organism.