siphon
tubular structure for drawing in or forcing out
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
siphonostele -- When a plant's vascular tissue develops as a central cylinder, it is said to have a siphonostele. See also protostele and eustele.
sister group -- The two clades resulting from the splitting of a single lineage.
siphon tube - tube used to siphon; formed by modification of conventional mouthparts in sucking insects to access liquid food ...
siphon
Found at the posterior margin in the mantle of Bivalves where fresh water enters the organism through the incurrent siphon, circulates through the mantle cavity and over the gills, and leaves through the excurrent siphon.
Siphonophora - the "conveyor belt" of the upgrowing larvae and the ovarium can be seen
Plankton are also often described in terms of size.[2] Usually the following divisions are used:
Group ...
Siphonophores. A group of specialized hydrozoan cnidarians, consisting of large planktonic polymorphic colonies ...
siphonogamy A reproductive process in seed plants in which a pollen tube carries the sperm cells to the egg located within the integumented megasporangium.
siphonoglyph Ciliated furrow in the gullet of sea anemones.
When the siphon of the sea slug Aplysia is gently touched, the animal withdraws its gill for a brief period.
" The verb diabeinein meant "to stride, walk, or stand with legs asunder"; hence, its derivative diabÄ"tÄ"s meant "one that straddles," or specifically "a compass, siphon.
Adults have a body composed of an outer tunic with an incurrent and excurrent siphon. When they are disturbed, tunicates tend to squirt water out.
Beating cilia of the gills cause water to enter the mantle cavity by way of the incurrent siphon and to exit by way of the excurrent siphon.
" Other critics worried that the genome project would siphon shrinking research funds away from individual investigator-initiated research projects. Smith takes the opposite view.
Active transport is like a water pump; it uses energy to pump water uphill where a siphon cannot. Facilitated diffusion (see above) is like a siphon in that additional energy is not required but it can only allow movement downhill.
(Science: botany) An organ, found in most cephalopods, containing an inky fluid which can be ejected from a duct opening at the base of the siphon. The fluid serves to cloud the water, and enable these animals to escape from their enemies.
Generally there is only one nucleus per cell, but there are exceptions, such as the cells of slime molds and the Siphonales group of algae. Simpler one-celled organisms (prokaryotes), like the bacteria and cyanobacteria, don't have a nucleus.
 See also: Organ, Trans, Human, Animal, Animals
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