characters of cycon
Answers
Explanation:
Sycon ciliata are creamy yellow in color and delicate-looking. Their bodies are arranged in the asconoid system, which is a simple tube with no folding of the outer body wall. They range from 1-3cm in height. Hairy, needle-like spines (called spicules) cover their bodies.
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Sycon, like all other sponges, possesses the characteristic anatomical peculiarity—the canal system. It permeates the body with water channels. It plays a very important role in the life of Sycon. Brusca and Brusca (2003) have used the term aquiferous system instead of canal system.
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Answer:
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Explanation:
Sycon ciliata are creamy yellow in color and delicate-looking. Their bodies are arranged in the asconoid system, which is a simple tube with no folding of the outer body wall. They range from 1-3cm in height. Hairy, needle-like spines (called spicules) cover their bodies. The spicules surrounding the osculum opening are longer than those at the base of the body. Y-shaped tetraxon calcite spicules lining the spongocoel and triactine spiclules in the walls of the flagellated chambers form the supporting skeleton of the sponge. The spicules appear to lie in a jelly called mesohyl, a structureless jelly containing archaocytes, amoeboid cells, and others.
Internal flagellated tubes are responsible for water current. The tubes are arranged radially and have openings call apopyles. Apopyles open into a central cavity or the spongocoel. The spongocoel leads into the osculum, which has an adjustable diaphragm. The diaphragm is surrounded by large spicules. (Harris, 1990; Waller, et al., 1996; Worheide, 1998)