Question

The roots of the aquatic plant hydrilla are poorly developed and lack xylem tissue. Which is an appropriate justification for this?

Answer 1

Xylem transports water and dissolved nutrients through the plant. But think about diffusion in an aqueous environment - how essential is it for the plant to transport water from one part or another when it is surrounded by water?

Answer 2

the roots are poorly developed to reduce the absorption of water