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, which include among others the jellyfishes, are another phylum with many tentacled specimens.

Cnidarians are members of the phylum Cnidaria.

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

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

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.

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

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.

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.

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

All living creatures from the lowest form of insect or animal life evidence the power of creativity, if it is only to reproduce a form like their own.

According to Islam, human works of art are inherently flawed compared to the work of God ; thus, it is believed by many that attempting to realistically depict the form of an animal or person is insolence to God.

As the least specialized animal, human beings have maintained the closest connection to the archetypal form ; contrary to the Darwinian conception of human evolution, all other animals devolve from this archetype.

Nervous system of a generic bilaterian animal, in the form of a nerve cord with segmental enlargements, and a " brain " at the front

* Glycogen, on the other hand, is an animal carbohydrate ; humans and other animals use it as a form of energy storage.

Calcium, combined with phosphate to form hydroxylapatite, is the mineral portion of human and animal bones and teeth.

Camouflage is not the only form of animal coloration that helps animals to survive or creates striking natural patterns.

Naturalist John Richardson, who studied the breed in the 1820s, before it was diluted by crossings with other breeds, could detect no decided difference in form between the breed and coyotes, and surmised it was a domesticated version of the wild animal.

A second study showed that poxvirus, baculovirus and the animal herpesviruses form separate and distinct clades.

In this most common form of Gnosticism the Demiurge had an inferior though not intrinsically evil function in the universe as the head of the animal, or psychic world.

But the form of the OHG and Gothic words suggests it is also a borrowing, perhaps indeed directly or indirectly from Greek " ἐλέφας " ( elephas ), which in Homer only meant " ivory ", but from Herodotus on the word also referred to the animal.

* class membership, of the form " noun copula noun " cat is an animal

As Gegenbaur argued, the task of comparative anatomy lies in explaining the form and organization of the animal body in order to provide evidence for the continuity and evolution of a series of organs in the body.

A study was performed to examine the influence of the form of hemoglobin ( Hb ) on the partitioning of inhaled volatile organic compounds ( VOCs ) into and animal blood.

Nineteenth-century biologists reported that the Hydra was such a simple animal that it was possible to force one through gauze to separate it into individual cells ; if the cells were then left to themselves, they would regroup to form a hydra again.

* Hack ( horse ), an animal used for pleasure riding, as well as the verb form ( hacking, to hack ) for the activity

safeguarding as if by inoculation by administering weakened or dead pathogens to a healthy person or animal with the intent of conferring immunity against a targeted form of a related disease agent.

They lay it down as a principle, that the immediate cause of the smallpox exists in the mortal part of every human and animal form ; that the mediate ( or second ) acting cause, which stirs up the first, and throws it into a state of fermentation, is multitudes of imperceptible animalculae floating in the atmosphere ; that these are the cause of all epidemical diseases, but more particularly of the small pox.

Representative ketones, from the left: acetone, a common solvent ; Oxaloacetic acid | oxaloacetate, an intermediate in the Krebs Cycle | metabolism of sugars ; acetylacetone in its ( mono ) enol form ( the enol highlighted in blue ); cyclohexanone, precursor to Nylon ; muscone, an animal scent ; and tetracycline, an antibiotic.

This approach, the Animal, Vegetable and Mineral Kingdoms, survives today in the popular mind, notably in the form of the parlour game question: " Is it animal, vegetable or mineral ?".

Modern interest in the monster was sparked by a sighting on 22 July 1933, when George Spicer and his wife saw ' a most extraordinary form of animal ' cross the road in front of their car.

The word " lycanthropy " is sometimes used generically for any transformation of a human into animal form, though the precise term for that is technically " therianthropy ".

Elsewhere the possession of a tutelary spirit in animal form is the privilege of the magician.

Medusa Jellyfish are the major non-polyp form of individuals of the phylum Cnidaria.

Neither the ascolichens nor the basidiolichens form monophyletic lineages in their respective fungal phyla, but they do form several major solely or primarily lichen-forming groups within each phylum.

:* level 2-“ life form ” -------------- e. g. tree, bird, grass and fish These are usually primary lexemes ( basic linguistic units ) loosely equivalent to a phylum or major biological division.

This phylum is sometimes grouped with Chlorobi, Fibrobacteres, Gemmatimonadates, Caldithrix and Marine group A to form the FCB group or superphylum.

The phylum Mollusca includes many species with muscular hydrostats in the form of tentacles and arms.