American Heritage® Dictionary of the English Language, Fourth Edition
- n. The undifferentiated plant tissue from which new cells are formed, as that at the tip of a stem or root.
Century Dictionary and Cyclopedia
- n. Actively dividing cell-tissue; the unformed and growing cell-tissues found at the ends of young stems, leaves, and roots. In structure the cells of the meristem are characterized by having a delicate homogenous membrane, which is only rarely thickened, and homogenous granular protoplasm with a nucleus. It is distinguished as primary meristem when it forms the first foundation of a member, or the cells which develop into the various tissue-elements, and which ordinarily soon lose the power of independent growth, and secondary meristem, in which the tissue-elements retain during their life the properties of typical cells, consisting of a closed cell-membrane with active protoplasm, a nucleus, and cell-contents. They retain the power of independent growth, and a meristem may arise from them at any time.
GNU Webster's 1913
- n. (Bot.) A tissue of growing cells, or cells capable of further division.
- n. undifferentiated tissue from which new cells are formed, as at the tip of a stem or root
- From the Ancient Greek μεριστός (meristos, "divided"). First used German in 1858, by Karl Wilhelm von Nägeli (1817-1891) in his Beiträge zur Wissenschaftlichen Botanik. (Wiktionary)
- Greek meristos, divided (from merizein, to divide, from meris, division; see (s)mer-2 in Indo-European roots) + -em (as in xylem and phloem). (American Heritage® Dictionary of the English Language, Fourth Edition)
“The most important observation made from our experimental data is that the meristem is a highly plastic tissue, which undergoes substantial changes in domain organization and cell behavior in response to environmental and developmental cues.”
“Telah diobservasi pada meristem tomat, expanding tissues, ripening fruit.”
“Large differences exist, for example, in the rate at which tundra plants can respond to changes in weather and climate, due to differences in allocation to stems versus leaves or to secondary chemistry versus new growth , in the ability to add new meristems , and in the constraints on the amount of growth that can be achieved by a single meristem within a single year (i.e., determinate versus indeterminate growth).”
“Yes, but the key to understanding and manipulating plant form lies in unraveling the communication machinery that enables shoot apical meristem cells to continuously coordinate the processes of stem-cell proliferation and organ primordia initiation.”
Alfred Hitchcock's Mystery Magazine
“Mercury program merger meridian meristem meritocracy”
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“If the pest can find no host 'it never develops a growing shoot (apical meristem), it never becomes photosynthetic, and it dies.”
“Wood is a tissue which is formed under the bark of the trunk by the meristem, the cambium.”
“The superiority of the technique is warranted by the fact that perfectly healthy clones could be produced by the technique of meristem culture.”
“Apart from slight leaf mottling, these viruses appear to be symptomless, but laboratory experiments using virus-free material prepared by meristem culture suggest that growth and yield are considerably retarded by their presence-which is the general state of the crop as at present cultivated.”
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