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Tissues — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceTissues2 Marks
Question
Water hyacinth float on water surface. Explain.
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Answer

A special type of parenchyma; called aernchyma is present in water hyacinth. This tissue has air filled spaces inside and because the air gets trapped inside especially in the stem part so it becomes buoyant. Due to this, water hyacinth floats on water surface.

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