alleryStart learning →A modified stem that grows horizontally underground and bears nodes and internodes is called what?
AThe corm
BThe rhizome
CThe tuber
DThe stolon
Answer & Solution
Correct answer: B. The rhizome
1. Several stems are modified for storage or spread, and each has a defining shape.
2. A rhizome grows horizontally underground and carries nodes and internodes, as in ginger and ferns.
3. Corms are similar but more rounded and fleshy, as in gladiolus, so they are not the horizontal type.
4. Tubers are swollen ends of stolons that store starch, and stolons run along or just below the soil surface.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 30 "Plant Form and Physiology", section 30.2 Stems_
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