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Cnidarians

~1200 answered questions
Parent Category: Animal Life
Cnidarians are aquatic animals belonging to the phylum Cnidaria. Common cnidarians include to jellyfish, sea anemones, corals and the Portuguese Man o' War. Questions about all species of cnidarians can be directed here.
cnidarians, such as jelly fish, sea anemones, hydra, and corals, have tentacles surrounding their mouth. they are a hollow-bodied animal with two celled layers that are organized into tissues. the inner layer forms a digestive cavity where food is broken down. A jelly fish. Cnidarian's have a sting…
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Hydra are in phylum Cnidarian group and sponges are in the phylum Porifera. The responsiveness of hydra is to external stimuli while sponges is more simple.
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CnidariaCnidaria is a phylum containing some 11,000 species of relatively simple animals found exclusively in aquatic, mostly marine, environments. Cnidarians get their name from cnidocytes, which are specialized cells that carry stinging organelles. The corals, which are important reef-builders, be…
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No. They are animals that consume other animals (carnivore, and at least second level consumer). PRODUCERS MAKE THEIR OWN FOOD.
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20 feet or higher
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They think its diameter is between 61 and 167 kilometers. It's hard to get an accurate measurement because it is so small and so far away.
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They eat small fish and shrimp..
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They eat small fish, crab, and shrimp also whatever they can find (write that down people). Small fish, shrimps, crabs and anything else that comes within reach of their arms.
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In present time, hydra-headed evils refer to the different aspects that can occur from a problem that's difficult. In Greek Mythology a Hydra-headed evil is a seven-headed monster that Hercules kills in Lake Lerna. When he tried to cut off one of its head another immediately grew back in its place.m…
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In general terms, the meaning of 'hydra-headed evils' is that particularly bad things can become much worse if they are not dealt with adequately. In other words, 'hydra-headed evils' are evils that only grow in strength if the responses or solutions to them are not the right ones.
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A cnidarian is an animal with stinging bristles, like a jellyfish,a portoguese manowar, and coral .
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Fish eat the leftovers from anenomes.
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The definition of 'hydra-headed evils' is 'problems that grow in strength when met with inadequate responses.' This term (and definition) alludes to the classical myth of the many-headed Hydra-beast, which grew two heads in place of one that had been cut off.
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A sessile polyp is a polyp which is essentially a flattened growth in the nature world that is relatively flat and small and can be grown on virtually any surface.
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The predators of the frilled anemone are fishes, nudibranchs, and sea stars. The frilled sea anemone belongs to the phylum Cnidaria and has a length of 10 centimeters.
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Cell level
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Crabs,sea urchins,isopods,amphipods,plankton,and small fish basically whatever they can catch.
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A hydra is a mythical creature with many heads. For each head that gets cut off, two more grow back. A hydra can be used to describe a problem that gets worse with each attempt to fix it.
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A jellyfish is the medusoid stadium of animals belonging to phyum Cnidaria, subphylum Medusozoa, which include: class: Scyphozoa class: Cubozoa class: Staurozoa class: Hydrozoa (only some hydrozoans have a medusoid stadium, so not all of them have jellyfishes) class: Polypodiozoa
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tacos
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by engulfing it
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Cindarians usually eat fish that they stun with their tentacles. "Farming their Food: Almost all cnidarians are carnivorous. Many eat small creatures or trap detritus, plankton and other microscopic titbits. But many also capture and eat large prey. Many cnidarians, however, more supplement their m…
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cnidarians have stinging cells called nematocysts located on their tantacles
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The root word hydra means Water.
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water
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cnidarians- some feed by predation. they eat small fish things like that. they also filter nutrients from the water into there body. they can also absorb organic chemicals from the water.
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it eats everything that comes into its mouth
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A worm is usually on land and is a generic term for all non-arthropod invertebrates. A cnidaria generally lives in marine and other aquatic environments, and have specialized cells that capture prey.
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Hydra's are deffentily not real because monsters and aliens are not real
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Jelly fish,octopus,it is also an invertabrate.
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they are not cold or warm blooded because they dont have blood
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They latch onto a rock and wait for food to come to them. If a small fish touches it's tentacles it will be paralyzed. Then the sea anemone drags the fish into it's mouth.
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40 YEARS
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Cnidarians have radial symetry.
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most micoorganisms that eat other microogranisms take what they can get. i don't believe there is a specific microorganism that strictly eats hydra but your best bet would be a type of ameba of carnivorous cilliate. sorry this probably isn't very helpful :/
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they eat thru they mouth
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No, hydra hasn't been proven real and is labeled a myth
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Generically, Hydra are small, simple, fresh-water animals that can reproduce asexually by budding or sexually by producing sperm and eggs. They have tube-like bodies and a number of tentacles that contain stinging cells called cnidocytes that they use to catch their prey. They have radial symmetry. …
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Hydras live in freshwater.
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Water fleas, small water insects.
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they eat cars
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yes
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Cnidarian means any creature ( basically jelly fish ) who possesses stinging cells to capture prey that are called cnidnocytes.
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They use diffusion to get air through there body walls.
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All live under water; most live in the oceans and seas, and a few live in freshwater. But they mostly live in saltwater or oceans. Their examples are Jellyfish, Corals and Sea Anemones
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Hydra have adapted to regrow if part of their body is separated. In an experiment, scientists ran a hydra through a sieve. When the cells were introduce to water, they eventually regrew into fully formed adult hydra.
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Yes. Hydra is a unicellular organism.
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Cnidarians have a gastrovascular cavity with one opening. They pull in food (smaller animals) with their stinging tentacles. In the cavity, enzymes break down the food. Nutrients diffuse directly to the body and waste is expelled out of the opening. Actually, the nutrients do not diffuse correctly m…
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Extracellularly in a digestive cavity.
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The gastrovascular cavity is where cnidarians digest their food. The phylum cnidaria has over 10,000 species that live exclusively in aquatic and mainly marine environments.
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sea anemone sea wasps sea jellies
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Hydra will eat virtually anything. This includes small insects, worms, as well as tiny animals. Hydra live in fresh water.
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If you mean the longest-lived, gold corals and black corals can be 2000 to 4000 years old.
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The basic body symmetry of a cnidarian, especially a jellyfish, is radial, meaning that no matter how it is bisected along its central axis, its two halves will be mirror images of one another.
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Polymorphism occurs when two or more different phenotypes exist in the same population of a species. Polymorphism results from evolutionary processes and contributes to evolutionary success of a species such as cnidarians.
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some simple organisms, such as hydas and sponges are able to reproduce by budding
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what are some characteristics of cnidarians
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Hydras reproduce both sexually and asexually depending on environmental conditions
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Hydra was a sea serpent with nine heads and was killed by Hercules. Hercules found that when ever he cut off a head two more heads would grow back. Hydra also had poisonous fumes that made Hercules cover his nose.
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the one Hercules slayed has seven heads But - each time you cut one off two more grow in it place.
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Well i m here pen down my opinion .- Hydra is such a crane that that is often imbalance while working . It can easily toppled if the load is little much heavy that SWL. The counter weight also not technically sound if there any unwanted happening going on. It also proof that the pivot point is not i…
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Asexually
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Cnidarians are divided in 3 main groups: the antozoan, syphozoans and cubozoan. The anthozoans are sea anemones and coral and cubazona are jellyfish. Most do not move around, but if necessary they move to get away from predators; the ocean current carries them. But, cubazonas, such as jellyfish, pro…
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a hydra depending on the species can be a multitude of colors, green is just the most common. Hydra is actually a genus of many species.
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Hydra is a genus of simple, fresh-water animals possessing bilateral symmetry. Hydras are predatory animals belonging to the phylum Cnidaria and the class Hydrozoa. They can be found in most unpolluted freshwater ponds, lakes and streams in the temperate and tropical regions by gently sweeping a col…
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In biology, adaptations are realized through research. Nearly every biological function has been honed through 3.5 billion years of evolution to serve the organism in any particular way. In cnidarians, four main survival adaptations are cnidocytes, endosymbiotic algae, interstitial cells, and the ga…
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20 feet or higher
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cnidarians are multicellular
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A nematocyst is a specialized organelle found in all cnidarians. Each nematocyst features a coiled, threadlike tube lined with a series of barbed spines. The nematocyst is used to capture prey and may also be used for defense purposes. When it is triggered to discharge, the extremely high osmotic pr…
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Yes, many species of cnidarians have powerful stinging cells and potent venom strong enough to cause injury and or death to humans. These include the Portuguese man of war, the sea wasp, lion's mane jellyfish, fire coral, and the carpet sea anemone. Even so, the majority of cnidarian species do not…
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Hydras move by somersaulting , pedal gliding , and by tantacles .
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i think a hydra has a incomplete digestive system called the-gastrovascular system
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cnidarians obtain food with they mouth
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homeostasis
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polyp and medusa
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...
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The Hydra did not have a proper name. It lived in the swamps near the city of Lerna and because of its reptilian-like characteristics it was described as a Ύδρα (Hydra) or "Hydrus" which is Latin for "water serpent".The Greek word "hudro"means "water snake"
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The characteristics of cnidarians are that they have claws, hard exoskeleton, and reproduce sexually. ------- That answer is just silly. The phylum, cnidaria, includes hydras, jellyfish, sea anemones, and corals. Cnidarians are defined by the fact that they possess cnidocytes (cells that can eithe…
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with it's stinger
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Me. It's easy to defeat a hydra. Just use some of your skill. And dont forget to throw Nestea Lemon flavour. That's it. So easy noob.!!
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A shoe by Ryka Company
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Mainly through suspension feeding. Cnidarians use stinging tentacles (nomocytes) to capture their prey. Once the tentacles grab the food it is absorbed in the gastrovascular cavity (stomach) and taken in as nutrients. 
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A hydra's diet does not change while budding, but it does eat more often.
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Hydra feed using stinging nematocysts to catch small aquatic organisms, most commonly, copepods.
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The Hydra produces asexually. Buds are produced on the body wall, and these break away free when they are mature enough to do so.
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The hydra takes in nutrition through the use of tentacles. The muscles of the organism absorb the nutrients as there is no circulatory, respiratory or urinary system.
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A hydra moves by leaning and putting the tentacles on it's head on the sea floor, and leaning again putting it's body on the sea floor. Thus, it appears to be somersaulting.
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ocean world
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No, it's an echinoderm.
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Pluto only has one moon and i don't think it is even a moon its a dwarf planet along with Pluto
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They have a mouth/anus and that is it.
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all animals could get endangered. cnidarians could get endangered too.
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by taking meteor sized poops then eating it until it gets a stiffy
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Sponges and cnidarians commonly reproduce asexually by budding
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Pole dancers.
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Jellyfish and Coraland sea anemones
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The rejection of his proposal chagrined him deeply. Much to my chagrin, it rained on my wedding day.Much to my chagrin, I forgot to bring my water bottle to cheerleading practice and had to use my friend's. You may also use it like this... I felt chagrin as I walked up to the teacher and asked h…
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importance of coelenterates
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