Vegetative propagation in Eichhornia and Pistia occurs by :

The correct answer is Option (2) → Offset

Option (1) Sucker — Incorrect. A sucker grows from an underground part of a stem, as in banana, pineapple and chrysanthemum.

Option (2) Offset — Correct. An offset is a short runner with a rosette of leaves that roots and breaks away, as in water hyacinth (Eichhornia) and Pistia.

Option (3) Runner — Incorrect. A runner is a long thin stem creeping over the soil, as in grass.

Option (4) Stolon — Incorrect. A stolon is a branch that arches down and roots, as in mint and jasmine.