Insect aquaplaning: Nepenthes pitcher plants capture prey with the peristome, a fully wettable water-lubricated anisotropic surface HolgerF. Bohnand Walter Federle* Zoologie II, Biozentrum, Am Hubland, 97074 Wu¨rzburg, Germany Communicated by Bert Ho¨lldobler, University of Wu¨rzburg, Wu ...
On a preserved specimen, the tube feet are usually contracted, but they can be seen easily on a live specimen, on which it may also be easier to see the peristome , a circular membrane surrounding the mouth.
To this end, mosses have developed elaborate peristome teeth that move in response to moisture changes and that tend to facilitate spore dispersal in dry air when the greatest opportunity for wind dispersal prevails.
In Bryopsida, as in Polytrichopsida, an operculum usually covers peristome teeth that often aid dispersal. Bryopsida have arthrodontous peristome teeth, separating them from the Polytrichopsida , which have nematodontous teeth.
a) Buds b) Calyx c) Protonema d) None Q.13 Anthridia bearing branch in Funaria is a) Antheridiochore b) Antheridiophore c) Antheridiome d) None of these Q.14 Number of teeth in two sets of Funaria peristome are a) 8+8 b) 16+8 c) 16+16 d) 32+32 Q.15 Moment in peristome teeth is called a) Xerochasy b) Hydrochasy c ...
227 Rooting the Polytrichopsida: The Phylogenetic Position of Atrichopsis ROOTING THE POLYTRICHOPSIDA: THE PHYLOGENETIC POSITION OF ATRICHOPSIS AND THE INDEPENDENT ORIGIN OF THE POLYTRICHOPSID PERISTOME NEIL E. BELL 1 AND JAAKKO HYVÖNEN 2* 1 Botanical Museum, PO Box 7, 00014 University of ...
peristome in N. alata showed the nectarieswereseparated by parenchyma cells interspersed with vascular bundles (Figs. 15–16). The peristome nectaries had small bundles
Examine the oral surface and find the centrally located mouth surrounded by a membranous peristome and a circle of protective oral spines. The oral side of each arm has an ambulacral groove housing two or four rows of tube feet or podia.
Ciliophora (ciliates): Stentor : whole mount slide (Figs. 4.17 and 4.19) Identify the following structures: • Cilia • Macronucleus • Peristome How does Stentor feed?
Peristome well developed, double, exostome of 16 teeth, reflexed when dry, papillose, endostome segments alternating with exostome teeth, shorter than