water hyacinth float on water surface.why?
 

Asked by sbidipak | 21st Jun, 2017, 06:38: PM

Expert Answer:

Water hyacinths are the only large aquatic herb that can float on the water unattached to the bottom. They float on bloated air-filled hollow leaf stalks. The leaves of free-floating water hyacinths are characterised by a bulbous swelling in a section of the petiole. The oxygen bubbles float to the surface of water and get released into the air which provides buoyancy.

Answered by Sivanand Patnaik | 22nd Jun, 2017, 07:56: AM