Question

Why do floating plants have waxy coating on their leaves?

Answer 1

Waxy coating is actually above cutical and upper epidermis, which control water loss. It actually does transpiration. It allows breathing, same time these leaves have long spread to gather more sunlight, also give buoyancy.

Answer 2

Answer:

The wax coating is mostly seen above cutical and upper epidermis.

This helps the leaves to breathe as well as gives buoyancy.

It plays an important role in controlling the water loss which keeps the leaves floating on the water.

So, these coatings are available on the floating leaves mostly.

The wax coating helps the leaves to sustain in the water.