Why does the petiole and stem of aquatic plants have air spaces ?
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Answer: Petiole and stem of Aquatic plants have air spaces that are called AERENCHYMA. Deu to the presence of AERENCHYMA the aquatic plants float on the water.
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Hope this helps you....!!!!
Explanation:
The petiole and stem of aquatic plants like hyacinth have air spaces to help them float on water. Aquatic plants are able to float on water due to the presence of AERENCHYMA (a type of Parenchyma).
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