Im doing a research project about the phylum cnidaria and i need at least five facts about cnidarians can anybody help me?... Dnt have much time its due tomorrow!
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Cnidaria are some of the simplest and most beautiful "animals." These creatures are flower-like and resemble plants in many respects. However, they have a mouth and a simple digestive system at the center of their tentacles. Because of these two features, these creatures are considered animals and not plants. There are 9000 species of Cnidaria.
Cnidarians are simple, radially symmetrical, animals. Radial symmetry means that the body is a hub, like a bicycle wheel, and tentacles are spokes coming out of it.
The Cnidarians include the hydroids, jellyfish, anemones, and corals. All Cnidarians use tentacles which have stinging cells which are used to subdue and capture food. The word "Cnidarian" means "stinging creature" in Latin (an old language that is still used in identifying animals). A stinger can be set off when a tentacle touches something. The stinger contains a toxin which disables prey. Most Cnidarians stingers are not powerful enough to do any harm to people. However, some jellyfish can deliver very painful, and sometimes fatal, stings to people.
Cnidarians can have one of two basic shapes: polypoid or medusoid.
Cnidarians are simple, radially symmetrical, animals. Radial symmetry means that the body is a hub, like a bicycle wheel, and tentacles are spokes coming out of it.
The Cnidarians include the hydroids, jellyfish, anemones, and corals. All Cnidarians use tentacles which have stinging cells which are used to subdue and capture food. The word "Cnidarian" means "stinging creature" in Latin (an old language that is still used in identifying animals). A stinger can be set off when a tentacle touches something. The stinger contains a toxin which disables prey. Most Cnidarians stingers are not powerful enough to do any harm to people. However, some jellyfish can deliver very painful, and sometimes fatal, stings to people.
Cnidarians can have one of two basic shapes: polypoid or medusoid.
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Ahhh Cnidarians.
Jelly Fish and Anemones are the main two groups.
They have no digestive system / organs.
No circulatory system (no blood, heart etc.)
They DO have muscle, more developed in some individuals.
All members have cnidocytes, which are harpoon like mechanisms that fire into prey (jelly fish stingers)
Most are made of a gelatinous material
Jelly Fish and Anemones are the main two groups.
They have no digestive system / organs.
No circulatory system (no blood, heart etc.)
They DO have muscle, more developed in some individuals.
All members have cnidocytes, which are harpoon like mechanisms that fire into prey (jelly fish stingers)
Most are made of a gelatinous material