Cnidarians form an animal phylum that is more complex than sponges, about as complex as ctenophores ( comb jellies ), and less complex than bilaterians, which include almost all other animals.

Some insects, amphibians, molluscs, crustaceans, Cnidarians, echinoderms and tunicates undergo metamorphosis, which is usually accompanied by a change of habitat or behavior.

Cnidarians ' activities are coordinated by a decentralized nerve net and simple receptors.

Cnidarians are classified into four main groups: the almost wholly sessile Anthozoa ( sea anemones, corals, sea pens ); swimming Scyphozoa ( jellyfish ); Cubozoa ( box jellies ); and Hydrozoa, a diverse group that includes all the freshwater cnidarians as well as many marine forms, and has both sessile members such as Hydra and colonial swimmers such as the Portuguese Man o ' War.

Cnidarians are distinguished from all other animals by having cnidocytes that fire like harpoons and are used mainly to capture prey but also as anchors in some species.

The majority of animals more complex than jellyfish and other Cnidarians are split into two groups, the protostomes and deuterostomes.

Cubozoan ocelli are the most complex of Cnidarians, and resemble the image-forming eyes of squid, octopuses, and vertebrates.

Cnidarians are members of the phylum Cnidaria.

One of the most recognizable types of holoplankton are Cnidarians ; also known as jellyfish.

Cnidarians were for a long time grouped with Ctenophores in the phylum Coelenterata, but increasing awareness of their differences caused them to be placed in separate phyla.

Cnidarians such as Hydra and the sea anemone Nematostella vectensis have become attractive model organisms to study the evolution of immunity and certain developmental processes.

Cnidarians ( jellyfish and corals ), echinoderms and polychaetes were spread across the other orders.

Since fossils of rather modern-looking Cnidarians have been found in the Doushantuo lagerstätte, the Cnidarian and bilaterian lineages would have diverged well over.

Cnidarians often have huge numbers of cnidocytes on their tentacles.

* It has been used as a term to describe the reproductive methods of some forms of Mollusks, Cnidarians, Sponges and Ctenophores.

Within 2 to 3 weeks, the tertiary colonizers-the macrofoulers have attached including tunicates, mollusks and sessile Cnidarians.

They include the Navy's Atlantic Command at Norfolk, Virginia, which is in contact with the Polaris subs ; ;

So in these pages the term `` technology '' is used to include any and all means which could amplify, project, or augment man's control over himself and over other men.

Last, not least, there are some poems which K. King sent me ( addressed to herself ) when I was preparing a fresh volume, asking me to include them.

The interesting thing in this connection is that the norms upon which students tend to converge include toleration of diversity.

A more complete list would also include Bradbury's `` The Pedestrian '' ( 1951 ), Philip K. Dick's Solar Lottery ( 1955 ), David Karp's One ( 1953 ), Wilson Tucker's The Long Loud Silence ( 1952 ), Jack Vance's To Live Forever ( 1956 ), Gore Vidal's Messiah ( 1954 ), and Bernard Wolfe's Limbo ( 1952 ), as well as the three perhaps most outstanding dystopias, Frederik Pohl and C. M. Kornbluth's The Space Merchants ( 1953 ), Kurt Vonnegut's Player Piano ( 1952 ), and John Wyndham's Re-Birth ( 1953 ), works which we will later examine in detail.

This office cooperates with the U. S. Department of Commerce in giving statewide coverage to services which include: statistics on markets abroad ; ;

Results of this experiment include the frequencies of the two strong spectral lines by which OH may be identified in interstellar gas ; ;

Recognizing the limitations of such a program, the 78th Congress in 1943 passed P. L. 113, which broadened the concept of rehabilitation to include the provision of physical restoration services to remove or reduce disabilities, and which revised the financing structure.

From here you can easily include a side trip to the old whaling port of Nantucket, Massachusetts, which looks just as it must have two centuries ago.

Special events and their dates which will make interesting shooting in the Midwest area, include the following:

Bear in mind that this does not include interior panels for partitions, fancy flooring, appliances and fixtures, electrical wiring, and plumbing, all of which will be taken up in detail in later issues.

Although the Af calculation is obvious by analogy with that for gravitational field and osmotic pressure, it is interesting to confirm it by a method which can be generalized to include related effects.

Stains, which include the wide variety of nonparticulate materials which give color even when present in very low concentration on the soiled object.

Miscellaneous soils, which primarily include sticky substances and colorless liquids which evaporate to leave a residue.

Whipple ( 1955 ) extends the effects to include the solar-corpuscular-radiation pressure, which increases both the minimum particle size and the drag.

Discussions of the giants one by one will include, as far as possible, data on these aspects of growth: size at which life is started and at which sexual maturity is reached ; ;

These area reports will be followed, according to present plans, by a summary report, which will include a detailed statement on methods.

If adjectival meanings show relatively low retentiveness of stems, as I am confident will prove to be the case in most languages of the world, why should our basic lists include 15 per cent of these unstable forms, but only 8 per cent of animals and plants which replace much more slowly??

In 1932 Dorset received its own exchange, which made business easier for the Manchester office, but it was not until February 1953 that area service was extended to include Manchester and Dorset.

Intelligence, as used herein, will include information on possible opponents and on the environment which can affect operations.

Could your future, your immediate future, be made to include taking us upstairs, giving us a bit of space in which our friend can work, and making available to him your finger tips ''??

And no doubt many people in states like the Carolinas and Georgia, which were among the most Tory in sentiment in the eighteenth century, bitterly regretted the revolt against the Crown.

The line of an eyebrow, the color of the skin, a ghazal from Hafiz, the purity of spring water, the long afternoon among the boughs which crowd the upper story of a pavilion -- these things are noticed, judged, and valued.

Of the longer pieces of the volume none is so memorable as `` Nameless And Immortal '', which at once took rank among the finest poems ever written in the Swedish language.

As the field on which my tent was pitched was a favorite natural playground for the kids of the neighborhood, I had made many friends among them, taking part in their after-school games and trying desperately to translate Grimm's Fairy Tales into an understandable French as we gathered around the fire in front of the tent.

Katherine Douglas King '' The invitation was accepted and other letters followed, in which she spoke of her concern for his health and her delight in seeing him so much at home among the crippled children she served.

But at the touch of Hume and Voltaire the noble or hideous visitations which had haunted the mind since Agamemnon's blood cried out for vengeance, disappeared altogether or took tawdry refuge among the gaslights of melodrama.

This is not to deny the existence of pogroms and ghettos, but only to assert that these horrors have had an effect on the nerves of people who did not experience them, that among the various side effects is the local hysteria of Jewish writers and intellectuals who cry out from confusion, which they call oppression and pain.

Independence Day is the appropriate date as a symbolical reminder of the American article of faith that governments are instituted among men to secure to them certain inalienable rights, the first of which is life, and when any government becomes subversive of that end, it is the right of the people to alter or abolish it.

It was a quarter of seven when the crowd washed me up among the other gallants who had established the Astor steps as the beach-head from which to launch their night of merrymaking.

The extent of such interference -- which may be so slight as to be undetectable at any point where either of the stations renders a usable signal, or may be so great as to virtually destroy the service areas of both stations -- depends on many factors, among the principal ones being the distance between the stations, their respective radiated power, and, of particular significance here, the time of day.

Jet -- which I coupled with the Deerstalker carbine as one of the year's two biggest developments -- few significant innovations appeared among 1961's handguns.

The collective by which I address you in the title above is neither patronizing nor jocose but an exact industrial term in use among professional thieves.

In discussing the process of communication, Loomis defines it as `` the process by which information, decisions, and directives are transmitted among actors and the ways in which knowledge, opinions, and attitudes are formed, or modified by interaction ''.

The manner in which this is shared among firms is taken as given.

Nevertheless, because the Cost Section has felt impelled to make some kind of a distribution of total costs, it has apportioned this residue, which it sometimes calls `` burden '', among the units of carload traffic on a basis ( partly ton, partly ton-mile ) which is concededly quite arbitrary from the standpoint of cost determination.

and a mere cost apportionment which somehow spreads among the classes and units of service even those costs that are strictly unallocable from the standpoint of specific cost determination.

But in the second subtype, which I take to be the one more frequently applied, only the operating expenses and not the `` cost of capital '' or `` fair return '' are apportioned directly among the various classes of service.

Often he seems even to have been able to guess correctly, without the tracing motions, solely on the basis of qualitative differences among the blot-like things which appeared in his visual experience.

but both were among the last products of a phase which was ending.

Though the spread of this type of decoration in the Aegean has not yet been precisely determined, it seems to appear first in the Cyclades, which were among the leading exporters of pottery throughout the century.

We find it in that `` common way of life pleasing to Christ and still in use among the truest societies of Christians '', that is, the better monasteries which made it easier to convert the Utopians to Christianity.

Even among the fast set in which she was moving, her method for keeping an escort from departing too early was unique.

The Postmaster General recently reported that mail order frauds -- among which fake therapeutic devices figure prominently -- are at the highest level in history.