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10 BÜCHER, DIE MIT «POLYARCH» IM ZUSAMMENHANG STEHEN
Entdecke den Gebrauch von
polyarch in der folgenden bibliographischen Auswahl. Bücher, die mit
polyarch im Zusammenhang stehen und kurze Auszüge derselben, um seinen Gebrauch in der Literatur kontextbezogen darzustellen.
POLYARCH has come up with the answer in a structural system of molded
fiberglass segments that combine with fine quality factory supplied mahogany
window, door, and solid panels in an unlimited arrangement of plans to meet
your ...
2
An Introduction to Plant Structure and Development: Plant ...
The terms indicate the number of ribs of primary xylem, as, for example (a) diarch,
(b) triarch, (c) tetrarch, (d) pentarch, (e) polyarch. In polyarch roots, common in
monocotyledons, there is usually a pith. Order of maturation of primary xylem is ...
.6 m e d 0 d n E Endodermis Perioycle Figure 27.10 Polyarch stele of Sorghum
ha/epense (L.) Pers. Figure 27.9 Polyarch stele of R. exa/fafa Li. .B m e d 0 d n E
Figure 27.11 Polyarch stele of Uroch/oa p/atyphy/la with sclerified centre (blue).
Hansjoerg Kraehmer, Peter Baur, 2013
Stylopodium occurs (1) On the top of ovary (2) At the top of style (3) All along the
style (4) Inside the style 74. In Trapa roots, the xylem is (1) Monarch (2) Diarch (3)
Hexarch (4) Polyarch 78. 79. 75. Nectaries usually do not occur (1) On Unit-3B ...
5
Ecological Strategies of Xylem Evolution
There can be roots with polyarch steles but little or no pith (Marattia) , but pith is
almost inevitable when there are approximately six or more xylem poles.
Multiplication of number of poles in larger roots is associated with increase in
absorptive ...
Sherwin John Carlquist, 1975
6
Plant Structure, Second Edition
However, roots with two poles (diarch roots) or more numerous poles (polyarch
roots) also occur and sometimes a parenchymatous pith-like dilatated metaxylem
is present (433, 434). Monocot root tips are much broader than those of dicots ...
Bryan G. Bowes, James D. Mauseth, 2008
7
Krishna's Objective Question Bank in Biology
The hypodermis in monocot stem is (1) Parenchymatous (2) Chlorenchymatous (
3) Collenchymatous (4) Sclerenchymatous 3 1 . The xylem condition in monocot
roots is (1) Hexarch (2) Hexa- to polyarch (3) Polyarch (4) Hepta- to polyarch 32.
N Saxena, S Sharma, S Sharma
Fig. 4.13. Transverse section of monocotyledonous (maize) root (100x) showing
epidermis, multilayered ground tissue (cortex), endodermis, phloem, xylem (
polyarch) and central pith. Dicotyledonous stem Epidermis Cortex stele Epiderma
| ...
Gould (1975) reported that at the centre of the axis, the solid polyarch protostele
was surrounded by wedge-like sectors of secondary xylem (Fig. 4.1C). The
secondary xylem strands alternate with protoxylem points. Since the cavities
between ...
S. P. Bhatnagar, Alok Moitra, 1996
10
A Text Book Ofbotany: Plant Anatomy and Economic Botany
Depending upon number of xylem bundles or patches roots may be called
monarch (with one xylem bundle), diarch (two bundles), march (three bundles),
tetrarch (four bundles) or polyarch (many bundles). The number of protoxylem
elements ...
Pandey S N, S. N. Pandey, Ajanta Chadha, 1993
