What are 5 facts about cnidarians?

Fast Facts: Cnidarians

Scientific Name: Cnidaria.
Common Name(s): Coelenterates, corals, jellyfish, sea anemones, sea pens, hydrozoans.
Basic Animal Group: Invertebrate.
Size: 3/4 of an inch to 6.5 feet in diameter; up to 250 feet long.
Weight: Up to 440 pounds.
Lifespan: A few days to more than 4,000 years.
Diet: Carnivore.

What is unique about Coelenterata?

Characteristics. All coelenterates are aquatic, mostly marine. The bodyform is radially symmetrical, diploblastic and does not have a coelom. The body has a single opening, the hypostome, surrounded by sensory tentacles equipped with either nematocysts or colloblasts to capture mostly planktonic prey.

What are the four main features of phylum Coelenterata?

The body is radially symmetrical. The digestion is both intracellular and extracellular. The nervous system and the circulatory system is absent….Scyphozoa

They are found exclusively in the marine environment.
Medusa is dominant and umbrella-shaped.
Polyps are not present.
Mesogloea is cellular.

What are the general characteristics of Coelenterata?

General characteristics of Phylum Coelenterata

Kingdom: Animalia.
Habitat: aquatic, mostly marine.
Habit: solitary or colonial.
Symmetry: radially symmetrical.
Grade of organization: tissue grade of organization.
Germ layer: diploblastic, outer ectoderm and inner endoderm.

What is the scientific name of Coelenterata?

Cnidaria
Cnidaria/Scientific names

cnidarian, also called coelenterate, any member of the phylum Cnidaria (Coelenterata), a group made up of more than 9,000 living species. Mostly marine animals, the cnidarians include the corals, hydras, jellyfish, Portuguese men-of-war, sea anemones, sea pens, sea whips, and sea fans. Fast Facts.

How do Coelenterates defend themselves?

They typically have a tube- or cup-shaped body with a single opening ringed with tentacles that bear stinging cells (nematocysts)..they use these cells to hunt their prey for nutrition as well as for their protection.

Which of the following animal belongs to phylum Coelenterata?

Hydras belong to the phylum Coelenterata (also called Cnidaria), which includes corals, sea anemones, and jellyfish.

What is the meaning of phylum Coelenterata?

noun. any invertebrate of the phylum Cnidaria (formerly Coelenterata), having a saclike body with a single opening (mouth), which occurs in polyp and medusa forms. Coelenterates include the hydra, jellyfishes, sea anemones, and corals.

Which of the following animals belongs to phylum Coelenterata?

How do Coelenterates catch prey and fight enemies?

Answers and Solutions they possess stinging cells called cnidocytes which bear a structure called nematocysts. these stinging cells are present in their tentacles which they use for injecting poison into their prey and paralyse them.

Is a jellyfish a Coelenterate?

Coelenterates (Phylum Coelenterata or Cnidaria) include jellyfish, anemones, corals, and hydras. The phylum is characterized by a gelatinous body, tentacles, and stinging cells called nemadocysts. Most species are found in marine waters, but some occur in brackish or even fresh water.

How many species are there in the phylum Coelenterata?

Phylum Coelenterata includes nearly 11,000 known species half of which are extinct. The classification followed here is given by Hyman, L.H., (1940). According to Hyman phylum, Coelenterata has been classified into 3 classes. Class 1. Hydrozoa (Gr., hydra=water +zoios=animal) Freshwater or marine. Solitary or conical.

What are the physical characteristics of a Coelenterata?

Characteristics of Coelenterata These are mostly aquatic animals. The mouth is surrounded by short and thin tentacles. They exhibit tissue level organization. They are diploblastic, i.e., the body is made up of two layers of cells- One layer makes up the cells outside the body (ectoderm), and the other forms the inner lining of the body (endoderm).

Which is an example of a coelenterate animal?

coelenterate An invertebrate animal with a radially symmetrical body, a body wall consisting of two cell layers, and a body cavity ( gastrovascular cavity) that communicates with the outside via a single opening, the mouth. Coelenterates include hydras, jellyfish, sea anemones, and corals (see Cnidaria) and also the comb jellies (see Ctenophora ).

Is the Coelenterata a synonym for Cnidaria?

Coelenterata The name formerly given to a phylum comprising both Cnidaria and Ctenophora. Today, when these two groups are universally separated in different phyla, the term ‘Coelenterata’ is sometimes used as a synonym for Cnidaria alone.

What are 5 facts about cnidarians?