Sponges are animals of the phylum Porifera ( /pɒˈrɪfərə/; meaning "pore bearer"). They are multicellular organisms which have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and which often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food, oxygen and remove wastes.
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Some articles on sponge:
... Lacking any protective shell or means of escape, sponges have evolved to synthesize a variety of unusual compounds ... One example isolated from the Okinawan plakortis sponges, plakoridine A, has shown potential as a cytotoxin to murine lymphoma cells ...
... Sponge Cola is the self-titled third studio album by the Pinoy rock band Sponge Cola ... Under Universal Records, Sponge Cola is already out in all major record bars ... Sponge Cola then released their 4th single Wala Kang Katulad and then released their 5th single Makapiling Ka ...
... The account of Jesus receiving a sponge soaked in vinegar while on the cross appears in all four of the canonical gospels, with some variation ... you forsaken me", a stander by soaks a sponge in vinegar and raises it on a reed for Jesus to drink ... "I thirst" (one of his last words) and is given the vinegar-soaked sponge "on hyssop" ...
... Capsospongia is a middle Cambrian sponge genus known from 2 specimens in the Burgess shale ... It has a narrow base, and consists of bulging rings which get wider further up the sponge, resulting in a conical shape ... Its open top was presumably used to expel water that had passed through the sponge cells and been filtered for nutrients ...
... The sponge iron reaction (SIR) is a chemical process based on redox cycling of an iron-based contact mass, the first cycle is a conversion step between iron metal (Fe) and wuestite (FeO ... In application, the SIT is used in the reformer sponge iron cycle (RESC) in combination with a steam reforming unit ...
More definitions of "sponge":
- (verb): Soak up with a sponge.
- (verb): Wipe with a sponge, so as to clean or moisten.
- (verb): Erase with a sponge; as of words on a blackboard.
- (noun): Primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies.
Synonyms: poriferan, parazoan
- (noun): A follower who hangs around a host (without benefit to the host) in hope of gain or advantage.
Synonyms: leech, parasite, sponger
- (noun): A porous mass of interlacing fibers the forms the internal skeleton of various marine animals and usable to absorb water or any porous rubber or cellulose product similarly used.
- (verb): Gather sponges, in the ocean.
Famous quotes containing the word sponge:
“He who has been impoverished for a long time ... who has long stood before the door of the mighty in darkness and begged for alms, has filled his heart with bitterness so that it resembles a sponge full of gall; he knows about the injustice and folly of all human action and sometimes his lips tremble with rage and a stifled scream.”
—Stefan Zweig (18811942)
“Alas for the affairs of men! When they are fortunate you might compare them to a shadow; and if they are unfortunate, a wet sponge with one dash wipes the picture away.”
—Aeschylus (525456 B.C.)