What are cnidaria characteristics?

Answer 1

The characteristics of cnidarians are that they have claws, hard exoskeleton, and reproduce sexually.

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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 either attach or sting) which are often used to grab and immobilize prey, as well as for defense and in rare cases, for locomotion.

Cnidarians are diblastic (two layers of cells), with a secreted layer between the inner and outer layer of cells, called the mesoglea. They possess a single gastrovacscular cavity that serves to respirate, disgest, and discharge waste. Commonly, tentacles surround the gastrovascular opening.

Cnidarians are predominately radially or bi-radially symmetric. The two common forms of cnidarians are a polyp form (attached, vase-shaped), and a medusa (bell shaped, free swimming) form. Some cnidarians are exclusively sessile (attached to a substrate), exclusively free swimming, or include both forms during their life cycle.

Answer 2

There are two types (or body plans) of cnidarians. There is the Medusa, which is a Jellyfish, really. And there is a Polyp, which is like an upside-down Jellyfish, if you want it simply. A polyp would be your sea anemone or coral. They spend most of their lives attached to a hard surface underwater. The main characteristics of cnidarians are they are invertebrates that use stinging cells to paralyze and capture prey and to defend them selves. They reproduce both sexually and asexually. And some of them live in a colony.

Answer 3

Cnidarians are the animal phylum that includes jellyfish and sea anemones. One of the key features of both sea anemones and jellyfish is that they have stinging cells on their tentacles that they use two capture prey. Their bodies are made of an inorganic, jelly like substance that is sandwiched between two super thin layers of cells.

Answer 4

The main characteristics of cnidarians are they are invertebrates that use stinging cells to paralyze and capture prey and to defend them selves. They also reproduce both sexually and asexually. Some of them even lives in a colony

Answer 5

containing central cavity w/ only one openning

Answer 6

- all have nematocysts - all have a single opening

- mouth lined with tentacles

Answer 7

Radical symmetry and tentacles with stinging cells.