primary xylem host:www.ucmp.berkeley.edu

Listing 1 - 10 from 11 for primary xylem

Lab I - Plant Structure (3)
... often crushed or destroyed chemically during preservation), it is the structure of the xylem --particularly primary xylem-- that is of particular interest for paleobotany. Understanding stele types is ... character of stelar development is the maturation of the primary xylem. The earliest maturing xylem cells are called protoxylem. These xylem elements are generally small and narrow. Later maturing ...
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Lab VIII - Medullosans and Cycads (2)
... surrounding different bundles of the eustele rather than surrounding the entire collection of primary xylem as in angiosperms. Medullosa stems have a thick, sclerenchymous cortex with abundant secretory ... differs from Medullosa in having fewer vascular bundles, less well developed wood, and larger primary xylem. The leaf traces also have different structure. Foliage of Medullosa (here referring to ...
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Lab VIII - Medullosans and Cycads (3)
... wood is produced from a bifacial vascular cambium. As the leaf trace arises from the primary xylem sympodium is dichotomizes and the two branches set off in opposite directions. The pair of ...
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Lab X - Anthophytes, Glossopterids and Others (2)
... xylem radiating out from the central zone of exarch primary xylem. The wood wedges are interconnected via transverse "platforms" of wood that commonly contain a root trace. The areas between the xylem ... with five bunches of vascular tissue at the edge of a substantial pith. The primary xylem is mesarch (Middle Pennsylvanian) or exarch (Upper Pennsylvanian). A bifacial vascular cambium forming ...
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Lab I - Plant Structure (title page)
... Structure (title page) Introduction Basic Organisation Plant Cell and Tissue Types Parenchyma Collenchyma Sclerenchyma Xylem Phloem Interpreting Evolutionary Relationships The Organism -- Building a Plant The Stele Questions ... function. Also, documenting how these structures change through time within lineages is a primary datum for evolutionary study. You will be looking at plants in various types ...
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UCMP Glossary: F
... offspring. It is often synonymous with syngamy. fiber -- Elongated and thickened cell found in xylem tissue. It strengthens and supports the surrounding cells. filament -- Long chain of proteins, such ... Also used to refer to mitosis in certain unicellular fungi. flagellin -- protein which is the primary component of prokaryotic flagella. flagellum -- n. Hair-like structure attached to a cell, used ...
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UCMP Glossary: G
... crystaline rock that results from very rapid cooling of magma. glucose -- simple sugar, and the primary product of photosynthesis. It is polymerized to make cellulose and chitin. glycoprotein -- a membrane-bound ... Contrast with punctuated equilibrium. grain -- (1) The texture of wood, produced by the kinds of xylem cells present. (2) The fruit of a member of the grasses. granite -- Highly felsic ...
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Lab V - Lycophytes (2)
... pattern differs from tree-size seed plants, whose primary growth is mainly upward and girth expansion occurs over time by the accumulation of secondary xylem. As the arborescent lycopsid grew taller, the ...
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UCMP Glossary: M
... . mannoxylic -- Wood in which there is a great deal of parenchyma tissue among the xylem is called mannoxylic. Cycads and pteridosperms have mannoxylic wood. Contrast with pycnoxylic. mantle -- That ... cells composed of units of the protein tubulin. Among other functions, it is the primary structural component of the eukaryotic flagellum. microvilli -- Thin fingerlike protrusions from the surface of ...
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UCMP Glossary: Botany
... history | Zoology | Botany | Paleogeography | adventitious roots -- A root that grows from somewhere other than the primary root, for example, roots that arise from stems or leaves. alternation of generations -- Life ... of an umbrella wood -- A secondary tissue found in seed plants which consists largely of xylem tissue. xylem -- Water-conducting tissue of vascular plants. Last updated:2006-11-28
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