Meristem sentence example

meristem
  • The separation of layers in the apical meristem of the root is usually very much more obvious than in that of the stem.
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  • The branches of the stem arise by multiplication of the cells 01 the epidermis and cortex at a given spot, giving rise to a protuber ance, at the end of which an apical meristem is established.
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  • If this division occurs by means of a localized secondary meristem connecting the cambial layers of adjacent bundles, an inlerfascicular is formed in addition to the fascicular cambium.
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  • An ordinary cambium is scarcely ever found in the Monocotyledons, but in certain woody forms a secondary meristem is formed outside the primary bundles, and gives rise externally to a little secondary cortex, and internally to a secondary parenchyma in which are developed numerous zones of additional bundles, usually of concentric structure, with phloem surrounded by xylem.
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  • In nearly all plants which produce secondary vascular tissues by means of a cambium there is another layer of secondary meristem arising externally to, but in quite the same fashion as, Ph II
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  • The leaves always arise from the outer portion of the primary meristem of the plant, and the tissues of the leaf are continuous with those of the stem.
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  • In many Laminariaceae the thallus also grows regularly in thickness by division of its surface layer, adding to the subjacent permanent tissue and thus forming a secondary meristem.
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  • Fin, 22.Median Longitudinal Section of the Growing, Point of the Stem of HiPPurii vulgaris, showing a many-layered meristem.
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  • In each bundle, separating the xylem and phloem, is a layer of meristem or active formative tissue, known as cambium; by the formation of a layer of cambium between the bundles (interfascicular cambium) a complete ring is formed, and a regular periodical increase in thickness results from it by the development of xylem on the inside and phloem on the outside.
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  • The stem is traversed by numerous collateral bundles, which have a limited growth, and are constantly replaced by new bundles developed from strands of secondary meristem.
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  • It appears at first as a simple cellular papilla of meristem, upon which an indication of two lobes soon appears.
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  • Auxins control a number of developmental processes in plants, including cell elongation, the formation of vascular tissue and meristem organization.
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  • The combined genetic and visualization tools are providing powerful new methods for dissecting cell-cell interactions within the developing root meristem.
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  • The apical meristem is an area of a plant where cell division takes place at a rapid rate.
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  • The main part of this image shows a root tip meristem cell from pea root.
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  • Cells within a plant meristem form a complex system, and clearly possess self-organising properties.
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  • In the study presented here, yam tubers, which were inoculated with C. gloeosporioides, developed characteristic discoloration of the meristem and cortex.
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