A horizontal underground stem is known as Rhizomes.
Rhizomes are also called root stalks. They are the underground growth of plants from which the parts which grow above the ground develop. A rhizome usually grows perpendicular to the direction of the force of gravity, i.e. they grow horizontal.
Characteristics of Rhizomes
- These adapted stems allow parent plants to produce offspring through asexual reproduction (vegetative propagation).
- Rhizomes are food providers that store starches underground in the case of turmeric, ginger, and lotus.
- Rhizomes also protect perennial plants by providing them energy throughout winters.
- The main function of rhizomes is to store food for the plant to survive harsh weather conditions.