Question

which type of permanent tissue help the aquatic plant to float

Answer 1

Aerenchyma (a type of Parenchyma).

Hope this helps :)

Answer 2

The functions of parenchyma tissues are storage, photosynthesis, and to help the plant float on water. Collenchyma- Are similar to parenchyma cells with thicker cell walls. They are meant to provide mechanical support to the plant structure in parts such as petiole of the leaf.