Canadian Medical Guide > Organisms > Plants > Plant Components > Plant Components, Aerial > Plant Shoots > Hypocotyl Terms and Definitions

Hypocotyl

Medical Definition:	The region of the stem beneath the stalks of the seed leaves (cotyledons) and directly above the young root of the embryo plant. It grows rapidly in seedlings showing epigeal germination and lifts the cotyledons above the soil surface. In this region (the transition zone) the arrangement of vascular bundles in the root changes to that of the stem. (From Concise Dictionary of Biology, 1990)
Guide Notes:	part of plant stem below the seed leaf; IM GEN or unspecified; coord probably IM in genetics & space physiol, NIM in pharmacognosy, with specific plant (IM or NIM)
Previously Indexed:	Plants (1966-1994)

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