Jellyfish are cnidarians.
The nervous system. Cnidarians have a neural net, but porifera do not.
Cnidarians include jellyfish and corals. Cnidarians are less complex than annelids or mollusks because the latter have gills with many layers of tissue.
Jellyfish and Coral and sea anemones
Probably because fish are more advanced biologically.
No a worm is more complex than a jellyfish
Jellyfish have Radical Symmetry and Cnidaria (Latin for "stinging cells") Also, they have two cell layers that are organized into tissue. Cnidaioans hace digestive,muscle,nerve, and sensory tissue. The Cnidarian body is a hollow sack with only ONE body opening (a mouth). It is surrounded by rope-like pieces of tissue called tentacles (arms). These tentacles may contain stinging cells. Hope that helps.
The Romans ad a more advanced civilization than the barbarians.The Romans ad a more advanced civilization than the barbarians.The Romans ad a more advanced civilization than the barbarians.The Romans ad a more advanced civilization than the barbarians.The Romans ad a more advanced civilization than the barbarians.The Romans ad a more advanced civilization than the barbarians.The Romans ad a more advanced civilization than the barbarians.The Romans ad a more advanced civilization than the barbarians.The Romans ad a more advanced civilization than the barbarians.
No, sponges do not have stinging cells like those found in cnidarians (e.g., jellyfish and sea anemones). Sponges are filter feeders that rely on water flow to capture food particles, rather than using stinging cells for prey capture.
The weight of a jellyfish will vary depending on the species of jellyfish. They can either weigh a few milligrams to more than 200 kilograms (440 pounds).
It depends on the place they are. In some oceans there may be more shark attacks then jellyfish stings.
additional= more than required advanced= more harder than regular
The annelid digestive tract is a complete system with a distinct mouth and anus, allowing for a one-way flow of food, which enhances digestion and nutrient absorption. In contrast, cnidarians, such as jellyfish and sea anemones, have a simple gastrovascular cavity that serves both digestive and circulatory functions, with only one opening. Flatworms also possess a gastrovascular cavity but lack specialized sections for digestion, making their system less efficient than that of annelids. This structural complexity in annelids allows for more advanced digestive processes.