单词 | pseudopodium |
例句 | However, there were variations in cell size and pseudopodia shape among the isolates. Discovery of three novel minorisa species, the smallest predatory marine picoplankton 2023-10-26T04:00:00Z Foram pseudopodia extend through the pores and allow the forams to move, feed, and gather additional building materials. Fundamentals of Biology 2015-01-01T00:00:00Z Still others send out lobe-like pseudopodia from anywhere on the cell, anchor the pseudopodium to a substrate, and pull the rest of the cell toward the anchor point. Concepts of Biology 2013-04-25T00:00:00Z Phagocytosis helps amoebae take up nutrients and pseudopodia help the amoebae move. Biology for AP Courses 2022-06-09T00:00:00Z Macrophages move through tissues and squeeze through capillary walls using pseudopodia. Anatomy and Physiology 2013-06-19T00:00:00Z In unicellular protozoa, most responses are the simple movements in response to a chemical stimulus in flagella, cilia or pseudopodia, which are determined by concentrations of ions in the cytoplasm. Exclusive: Oliver Sacks, Antonio Damasio and Others Debate Christof Koch on the Nature of Consciousness 2015-06-17T04:00:00Z Still others form cytoplasmic extensions called pseudopodia anywhere on the cell, anchor the pseudopodia to a substrate, and pull themselves forward in an “oozing” movement: these are typically amoeba. Fundamentals of Biology 2015-01-01T00:00:00Z The long pseudopodia reaching beyond the spicules are not lettered. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" 2012-04-25T02:00:53.567Z Phagocytosis allows amoebae to move and pseudopodia help in the uptake of nutrients. Biology for AP Courses 2022-06-09T00:00:00Z The former of these consists, at one stage of its existence, of a small globular mass of protoplasm, from the whole periphery of which a multitude of fine pseudopodia radiate. The Contemporary Review, Volume 36, October 1879 2012-04-18T02:00:17.060Z These represent modified pseudopodia, and in the formation of the motile gametes of some of the lower forms, e.g. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" 2012-01-31T03:00:17.257Z Protamœba, prō-ta-mē′ba, n. a low form of the Monera, which is constantly changing its form by sending out and withdrawing pseudopodia. Chambers's Twentieth Century Dictionary (part 3 of 4: N-R) 2012-01-30T03:00:13.887Z It is to be noted that these processes are non-motile, and not in any way comparable to pseudopodia, to which they were formerly likened. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 5 "Greek Law" to "Ground-Squirrel" 2011-12-05T03:00:51.527Z Phagocytosis helps amoebae in cell division and pseudopodia help amoebae move. Biology for AP Courses 2022-06-09T00:00:00Z When about to reproduce, the creature retracts its pseudopodia, and forms around its exterior a structureless coat or cyst, an action which takes place frequently in lowly organisms, and is called their process of encystment. The Contemporary Review, Volume 36, October 1879 2012-04-18T02:00:17.060Z One of these cells, the future egg, grows more rapidly than the others, some or all of which it finally absorbs by means of lobose pseudopodia extruded from its margin. Freshwater Sponges, Hydroids & Polyzoa 2011-06-25T02:00:17.833Z From the peripheral protoplasm project, not only fine pseudopodia, but hollow spines of calcareous matter, which are set on the shell, and have an axis of active protoplasm. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6 "Foraminifera" to "Fox, Edward" 2011-04-22T02:00:08.637Z The pseudopodia serve chiefly for movement and attachment, and never, it should be noted, for the injection of solid food-particles, as in the case of Amoebae. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z It exists as a mass of protoplasm, and pushes its body out into finger-like processes or pseudopodia, and by means of these moves about or grasps particles of food. The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli We keep looking for contact, a trigger in the pseudopodium. Mr. Spaceship The opening at one end of the shell through which the protoplasm protrudes to make the pseudopodia is surrounded by a rim having a characteristic pattern. A Critique of the Theory of Evolution Xenophyophoridae are a small group of bottom-dwelling Sarcodina which show a certain resemblance to arenaceous Foraminifera, though observations in the living state show that the character of the pseudopodia is lacking. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6 "Foraminifera" to "Fox, Edward" 2011-04-22T02:00:08.637Z Their calcareous shells are generally pierced by a multitude of minute pores, through which the little creatures protrude their pseudopodia. The Contemporary Review, Volume 36, September 1879 Reproduction takes place by fission, or by a single pseudopodium detaching itself from the parent body and developing into a separate amœba. The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli The amoeba shrinks into itself at a touch, withdraws the pseudopodium that is roughly handled, or makes its way round the small object which will serve it as food. Introduction to the Science of Sociology Rhizopoda means "root-footed," and the name is applied to these animals because most of them move about by means of root-like processes known as pseudopodia or "false feet." Insects and Diseases A Popular Account of the Way in Which Insects may Spread or Cause some of our Common Diseases In the same way we may perhaps come to explain the more complex movements which the Infusorian makes with its vibratory cilia, which, moreover, are probably only fixed pseudopodia. Creative Evolution In the right-hand drawing the process is represented as complete. n, N, severed nucleus; vc, severed vesicle; ps, pseudopodia; f, ingested food. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions It will stretch out pseudopodia to reach solid objects to which to cling; it will attempt to return to these objects when dislodged; it will actively absorb food. Human Traits and their Social Significance The upper portion of the archegonial wall is carried up as a calyptra on the sporogonium, which, as in Sphagnum, has no seta and is raised on a pseudopodium. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" The pseudopodia are lobose, sometimes absent, the body then progressing by a flowing movement; the body consists of ectoplasm and endoplasm, the latter being granular and internal, the former hyaline and external. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 It may be he will still, with the utmost nonchalance, be pushing out his pseudopodia, and ingesting diatoms when the fretful transitory life of humanity has passed altogether from the earth. Certain Personal Matters Its form is not constant during activity, for fingerlike processes called pseudopodia are pushed out tentatively in many directions to be followed as circumstances direct by the materials of the whole cell body. The Doctrine of Evolution Its Basis and Its Scope A little projection of the outer, clearer layer of protoplasm, a pseudopodium, appears; into this the whole animal may flow and thus advance a step, or the projection may be withdrawn. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 The division of Protozoa comprising all those which are capable of emitting pseudopodia. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science A more sluggish form than the preceding, distinguished by its larger size, its dense granulation, and by short, rounded pseudopodia, which, as in Amœba proteus, may come from any part of the body. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The pseudopodia project from the body like rays. The Gutenberg Webster's Unabridged Dictionary Section R Arcella vulgaris is a minute morsel of protoplasm, which lives in a concave-convex, brown, finely reticulated shell, through a circular opening in the concave side of which it can project itself by throwing out pseudopodia. Unconscious Memory This prevents their putting out pseudopodia as organs of motion. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 These changeable processes are called "false feet," or pseudopodia, because they act physiologically as feet, yet are not special organs in the anatomic sense. The Evolution of Man — Volume 1 A delicate layer of ectoplasm surrounds the granular endoplasm, and pseudopodia formation is eruptive, beginning with the accumulation of ectoplasm. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 When the time comes that they want to do so they will throw out a little mental pseudopodium without much difficulty. The Note-Books of Samuel Butler The positions of the protoplasm which the vesicles fashion change continually; only the grainless protoplasm of the pseudopodia develops no air. Unconscious Memory Its membranous disk recalls the genus Plakopus; its mononucleate condition, its membranous disk, and the short, sometimes branched, pseudopodia make it difficult to identify with any phase in the life-history of Trichosphærium. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The pseudopodia are very fine, reticulate, granular, and sharply pointed, and form a loose network outside of the shell opening. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The membrane is perforated by clearly defined and permanent holes for the exit of the pseudopodia. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 A thin layer of protoplasm surrounds the shell and fine, branching, pseudopodia are given off in every direction. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The object of the air-vesicles is to bring the animal into such a position that it can take fast hold of something with its pseudopodia. Unconscious Memory The protoplasm becomes massed outside of the mouth-opening and from here a dense network of pseudopodia forms a trap for diatoms and smaller Protozoa. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The pseudopodia have axial filaments that can be traced to the periphery of the nucleus. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The pseudopodia emerge from the body between this membrane and the shell margin. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The short pseudopodia which give to the periphery a fringed appearance are quite regularly placed in connection with the pseudopodia. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 In general the form is oval and either regular in outline or irregular through the presence of many pseudopodia. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The pseudopodia are occasionally withdrawn, and the flagellum is the sole means of locomotion. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 After the pseudopodia were well formed, the body became flat and closely attached to the glass slide. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 |
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