Question

why do fixed aquatic plants have flexible stem​

Answer 1

One of the function is that they breathe through the pores or through stomata on their broad leaves. The stem of the aquatic plants is flexible because it helps the leaves to float. The stems of such plants may have hollow, air filled pockets which help the plants to remain at the sunlit surface.

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Answer 2

Explanation:

the stem of the aquatic plants is flexible because it helps the leaves to float the stems of such plants may have hollow air filled pockets