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They both have a large opening through which water flows allowing them to suspend food particles from the water. Their tentacles aid in their ability to propel water towards these openings, increasing their food intake.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoCnidarians are radially symmetrical animals having sacklike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms whereas Poriferans are primitive multicellular marine animals whose porous bodies are supported by a fibrous skeletal framework; they usually occur in sessile colonies.
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Symmetry of cnidarians?
Cnidarians have a radial symmetry.
How do protozoans differ from poriferans?
protozoans are tiny,single celld organism. they are very small and it can be only seen trhough a microscope. poriferans are the simplest of the many celled animals their bodies are made up of hollow tubes with pores or openings on the side
What evidence exists to support the idea that poriferans evolved from protists?
Shoko
Are cnidarians arthropods?
Cnidarians and Sponges are invertebrates
Are cnidarians warm-blooded?
No. Cnidarians don't even have a circulatory system.
How does method by which cnidarians obtain food differ from method by which poriferans obtain food?
Poriferans needs organic substances and cnidarians needs of a gastrovascular cavity with openings.
What are the differences between the poriferans and cnidarians?
Cnidarians are radially symmetrical animals having sacklike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms whereas Poriferans are primitive multicellular marine animals whose porous bodies are supported by a fibrous skeletal framework; they usually occur in sessile colonies.
What is a Cnidarians such as a box jellyfish?
cnidaria(similar to cnidarians)
What are 2 ways cnidarians are more advanced than jellyfish?
Jellyfish are cnidarians.
How are cnidarians an improvement upon poriferans?
well defined true tissue level of organization first to move having primitive muscles and nerves, becomes first active predator
What is the difference between poriferans and porifere?
Porifera is name of phylum and animals belonging to it are called poriferans.
What primary characteristics of animals are not exhibited by the poriferans?
Poriferans (sponges) lack many common characteristics of animals such as a head or a mouth. Typically poriferans do not have eyes, ears, as well as other sense organs. Poriferans do not possess major organs such as heart, stomach, muscles, or even a nervous system.
What are the examples of poriferans?
Sponge
What the example of poriferans?
Sponge
What ways does the flow of water benefit the poriferans?
Poriferans, or sponges, use the flagella of their individual choanocyte cells in order to generate a current of water that brings in food, in the form of zooplankton and or phytoplankton, as well as to bring in oxygen and other dissolved nutrients, and take away carbon dioxide and other dissolved wastes.
What are habitat of poriferans and coelentrates?
All poriferans and coelenterates live in water, most of them in sea water, but some in fresh water. Poriferans are bottom-dwellers. Coelenterates can be free-swimming, fixed to the bottom or live in colonies fixed to the bottom, depending on species and face of life.
What are two types of cnidarians that are formed by colonies?
small cnidarians and big cnidarians
