10 ENGLISH BOOKS RELATING TO «HYDROTHECA»
Discover the use of
hydrotheca in the following bibliographical selection. Books relating to
hydrotheca and brief extracts from same to provide context of its use in English literature.
1
Hydroids of Greenland and Iceland (Cnidaria, Hydrozoa)
Hydrocladium straight to slightly curving, heteromerously segmented by regular
oblique nodes into main segments bearing hydrotheca and intersegments
without hydrotheca. All segments elongated. Main segment with hydrotheca
below ...
2
Intertidal Invertebrates of the Central California Coast
Hydrotheca. The peridermal, cuplike structure that surrounds the hy- dranth, and
into which the hydranth may be drawn when disturbed. Internode. Part of the
stem or branch between the nodes. Medusoid form. Inclusive term applied to the
...
Sol Felty Light, Ralph Ingram Smith, 1954
3
Palaeontology Invertebrate
Thus, for example, in Didymograptus gibberulus the first hydrotheca of the
second branch (2) (fig. 19 C) is derived, by the crossing canal (cl), from the first
hydrotheca of the first branch (1), but the second hydrotheca (3) of the first branch
is ...
4
Intertidal Invertebrates of the Central California Coast
Hydrotheca. The peridermal, cuplike structure that surrounds the hydranth, and
into which the hydranth may be drawn when disturbed. lnternode. Part of the
stem or branch between the nodes. Medusoicl form. lnclusive term applied to the
...
Laboratory and Field Text Invertebrate Zoology, 1954
5
Circannual Clocks: Annual Biological Rhythms
Eventually, only the structure of the hypostome is clear (3, 4), and, as it also is
resorbed, an amorphous mass of cellular debris remains in the hydrotheca (5).
The empty hydrotheca (6) eventually drops from the upright stem, and, after a few
...
6
Sessile Animals of the Sea Shore
Older hydranths near the base of the hydrocaulus may regress completely (Fig.
11.14(k)) and eventually the hydrotheca is lost. Regeneration at these points has
never been observed. A summary of events in the hydranth cycle is given in Fig.
7
Animal Forms And Functions: Invertebrata
4.2). outh Enteric cavity Ectoderm Mesogloea Endoderm Hydrotheca Shelf-like
prolongation of hydrotheca Fig. 4.2. Obelia. V.S. of polyp or hydranth. The tubular
perisarc surrounding the coenosarc extends around the hydranth to form its ...
P.Puranik, Asha Bhate, 2007
8
A Practical Guide to the Marine Animals of Northeastern ...
Presence of a hydrotheca (a cuplike or tubular container into which the zooids
can retreat completely when disturbed) (FIG. 8.2) A. Hydrotheca present,
although it may be reduced and saucer shaped th B. Such a theca is absent,
although ...
9
The Light and Smith Manual: Intertidal Invertebrates from ...
Colonies with fixed gonophores; hydrothecal pedicels spirally grooved; crease
lines present at bases of opercular plates (opercular valves clearly demarcated
from margin of hydrotheca) (plate 44K-44P) Calycella syringa — Colonies ...
Sol Felty Light, James T. Carlton, 2007
10
An Account of the Petrological, Botanical, and Zoological ...
Gon angia arising just below the base of a hydrotheca, ovoid, with a four-toothed
terminal orifice; distal portion marked with wide annulations which become
obsolete towards the proximal end. Dredged in Swain's Bay. The mode in which
the ...
