Stem vs Root: Key Differences — NEET Biology
📚 Practice ConceptWhat are the features that distinguish a stem from a root? The stem is the ascending part of the axis bearing branches, leaves, flowers and fruits. It develops from the plumule of the embryo of a germinating seed. The stem bears nodes and internodes. The region of the stem where leaves are born are called nodes while internodes are the portions between two nodes. The stem bears buds, which may be terminal or axillary. Stem is generally green when young and later often become woody and dark brown.
Which of the following statements about the stem are correct? S1: The stem develops from the plumule of the embryo and characteristically possesses regions called nodes where leaves are borne, separated by internodes. S2: Axillary buds, located in the axil of leaves, have the potential to develop into branches, whereas terminal buds contribute to the primary growth of the main stem axis. S3: Besides bearing leaves, flowers, and fruits, stems are also involved in the conduction of water, minerals, and photosynthates. S4: While stems primarily spread branches and conduct substances, they rarely perform functions like food storage, support, or vegetative propagation. S5: Stems are always aerial, erect, and woody, never modified for underground food storage or protection.
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