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Lotus plant has roots fixed at the soil presentat the bottom of the pond while its leaves andflowers are found floating on the surface of the water. Any object less dense than water will float on it. Thus, it follows that the leaves have buoyancy to float on water. This buoyancy is due to air spaces present in between parenchyma tissue. Such a sort of parenchyma tissue having thin-walled cells with large intercellular air spaces, especially found in hydrophytes, is called aerenchyma. It is with the help of aerenchyma that the lotus leaves float on water.
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