1. Swollen and spongy petioles or leaf stalks keep the water
hyacinth afloat.
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Answer:
The answer is TRUE. Swollen and spongy petioles or leaf stalks keep the water hyacinth (Eichhoria crassipes) plant afloat.
Explanation:
The bulbous stem/petiole is hollow/spongy/swollen and when filled with air, provides the buoyancy to the water hyacinth so that it can float above the water unsupported.
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