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Cnidaria: It's pronounced like this: naɪˈdɛəriə, (the C is silent). It is a phylum with about 9 thousand species. Among them are corals, sea anemones, hydrae, jellyfish, and many others.
The characteristic that most distinguishes them, is their "cnidocytes" (whence comes the name). These are specialized, venomous cells, used to stun, capture, and hold prey.
All cnidaria are aquatic animals, and most are marine.
All are radially symmetrical and have a single orifice and body cavity that performs digestive and respiratory functions.
What else can I help you with?
What are major characteristics of the phylum?
some of the major characteristics of the phylum are a shared body plan, embryonic development patterns, and specific molecular sequences.
What phylum have some free drifting medusae?
Medusae are found in the phylum Cnidaria, which includes jellyfish. Some species of jellyfish have free-drifting medusae as part of their life cycle, allowing them to move through the water and feed on plankton and other small organisms.
What are three characteristics common to all animals in the phylum?
Animals in the arthopada phylum 3 major characteristics. They have three body parts, a tougher exoskeleton, and have jointed legs.
What is the classification of coral?
Corals are classified as members of the phylum Cnidaria, which includes other animals such as jellyfish and sea anemones. Within the phylum Cnidaria, corals belong to the class Anthozoa. They are further divided into two subclasses: Hexacorallia (includes stony corals) and Octocorallia (includes soft corals).
Phylum pisces characteristics?
Phylum Pisces includes all fish species. Some common characteristics of fish include having gills for respiration, a swim bladder for buoyancy control, scales for protection, and fins for locomotion. Fish are ectothermic, meaning their body temperature varies with the environment.
What are the differences between cnidaria and other phylums?
There are A LOT of differences between the Cnidaria phylum and other phylums. 1. all species in the cnidaria phylum have nematocysts which are the things that sting prey 2. jellyfish which are in the cnidaria phylum, do not have blood because they are made up of 95% of water 3. all species of cnidaria phylum have a single opening which means they eat and poop from the same place 4. can live anywhere from the tropics, to the poles, on the surface of the water, to the depths of the seas (some even bury themselves under the ocean bed) 5. have two different "stages" - polyp and medusa - some species of the cnidaria phylum just stay at the polyp stage and never move on to the medusa stage
What are major characteristics of the phylum?
some of the major characteristics of the phylum are a shared body plan, embryonic development patterns, and specific molecular sequences.
What phylum have some free drifting medusae?
Medusae are found in the phylum Cnidaria, which includes jellyfish. Some species of jellyfish have free-drifting medusae as part of their life cycle, allowing them to move through the water and feed on plankton and other small organisms.
Which Stinging cells are a characteristic of members of this phylum.?
the scientific phylum name is Cnidaria. this includes animals such as jellyfish, anemone, and coral. Some are medusa shaped (jellyfish) or polyp shaped (upside down jellyfish) All of them have nematocysts which is a scientific name for stinging cells. These invertebrates evolved from sponges. New characteristics include movement (sponges move but only at the larval stage) and tissues for the movement (muscle and nerve tissue). They also evolved from asymmetrical symmetry (sorry - redundant) to radial symmetry.
Classification of invertibrates?
Invertebrates have nucleated cells and are thus eukaryotes (Domain Eukarya in the Empire of Life). They are multicellular and heterotrophic and thus animalian (Kingdom Animalia). Edward O. Wilson is what one calls a 'splitter' in taxonomy and has split the animal kingdom into about 85 phyla. Most other taxonomists think there are somewhere in the thirties in the realm of 'How many phyla are there ?' Some invertebrate animal phyla are: Phylum Porifera, Phylum Cnidaria, Phylum Ctenophora, Phylum Platyhelminthes, Phylum Annelida, Phylum Mollusca, Phylum Arthropoda, Phylum Echinodermata, Phylum Hemichordata, Phylum Nematoda, Phylum Rotifera, Phylum Kinorhyncha, Phylum Nemertea, Phylum Bryozoa
Does a hydra have bilateral or radial symmetry?
The hydra has radial symmetry. The hydra belongs to the phylum Cnidaria and many immobile species in this phylum exhibit radial symmetry. Some marine animals that have bilateral symmetry are fish, sea turtles, and marine mammals.
What are three characteristics common to all animals in the phylum?
Animals in the arthopada phylum 3 major characteristics. They have three body parts, a tougher exoskeleton, and have jointed legs.
What is the classification of coral?
Corals are classified as members of the phylum Cnidaria, which includes other animals such as jellyfish and sea anemones. Within the phylum Cnidaria, corals belong to the class Anthozoa. They are further divided into two subclasses: Hexacorallia (includes stony corals) and Octocorallia (includes soft corals).
Phylum pisces characteristics?
Phylum Pisces includes all fish species. Some common characteristics of fish include having gills for respiration, a swim bladder for buoyancy control, scales for protection, and fins for locomotion. Fish are ectothermic, meaning their body temperature varies with the environment.
What does cnidarian mean?
Cnidiarian is the word for the phylum of jellyfish and sea anemomes. Some of the requirements to make it into the Cnidaria Phylum are possessing radial symmetry, having no nervous system or head but having a nerve net, and possessing nematocysts (which are stinging cells unique to cnidarians). Nematocysts are also called cnidea, which likely is the basis of the meaning of the name Cnidaria.
Which phylum has a pseudocoelom?
The phylum Nematoda has a pseudocoelom. This type of body cavity is not completely lined by mesoderm tissue, giving it certain characteristics of a true coelom but lacking some key features.
What are the distinguishing characteristics of caucasian face features?
Some distinguishing characteristics of Caucasian face features include a narrower nose, lighter skin tone, and a variety of eye colors. Additionally, Caucasians often have lighter hair colors and a wider range of facial shapes compared to other ethnic groups.
