Question

why aquatic plants have flexible stems and leaf petioles?

Answer 1

To help them to float 

Answer 2

To allow them to float during water current

Answer 3

in oder for them to lose water

Answer 4

Hinders any breakage or damage as theymove with the flow of strong currents.

If they were stiff and hard,the strong currents would break the stem.

Answer 5

In order for them to fload on water