meristem
51primary meristem — noun : a meristem consisting of direct derivatives of embryonic cells that are always active in growth compare secondary meristem * * * primary meristem noun Any of the three meristematic tissues in the developing plant embryo, from which… …
52primary meristem — noun Date: 1875 meristem (as procambium) derived from the apical meristem …
53apical meristem — The meristem at the tips of stems and roots. Composed of undifferentiated cells, many of which divide to add to the plant body but the central mass (the quiescent centre) remains inert and only becomes active if the meristem is damaged. Also… …
54primordial meristem — noun : primary meristem * * * primordial meristem, Botany. the actively dividing cells lying behind the root cap …
55secondary meristem — noun : a meristem that develops from cells that have differentiated and functioned as part of a mature tissue system and then become meristematic again compare primary meristem …
56apical meristem — noun Date: circa 1934 a meristem at the apex of a root or shoot that is responsible for increase in length …
57ground meristem — noun Date: 1938 the part of a primary apical meristem remaining after differentiation of protoderm and procambium …
58primary meristem — Synonym for an apical meristem …
59ground meristem — Bot. an area of primary meristematic tissue, emerging from and immediately behind the apical meristem, that develops into the pith and the cortex. [1935 40] * * * …
60intercalary meristem — Bot. meristem in the internode of a stem. * * * …