Justify the following statements on the basis of external features: (i) Underground parts of a plant are not always roots.
Explanation In some plants like ginger and potato, stems remain underground. Stem remain underground to carry out function like food storage and vegetative reproduction. Example: Potatoes are modified form of underground stem. A potato tuber has nodes, internodes, buds and leaves. The presence of an apical bud confirms that it is a stem. Final Answer Roots are not always an underground part. In some plants stems are the underground part. For example: ginger, potato tuber. Hence, these examples justifies the statement that underground parts of a plant are not always roots.
