Difference between Ctenophora and Cnidaria
Difference between Ctenophora and Cnidaria are in tabular form below –
No. |
Ctenophora |
Cnidaria |
Definition |
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1. | A phylum of sea walnuts or comb jellies that are diploblastic, radially symmetrical, contains comb plates and use cilia for the locomotion is known as Ctenophora. | A phylum of stinging creature that are radially symmetrical, diploblastic with no segmentation, no organ system and contains cup or umbrella shaped body is known as Cnidaria. |
Structure and Symmetry |
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2. | Organisms of Ctenophora contains comb jellies and show biradial symmetry. | Organisms of Cnidaria contains stinging structure and show radial symmetry. |
Polyp or Medusa stage |
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3. | Ctenophora shows only medusa stage. | Cnidaria shows both medusa and polyp stage. |
Digestive system |
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4. | It has complete digestive system. | It has incomplete digestive system. |
Classes |
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5. | Ctenophora is divided into two classes such as Nuda and Tentaculata. | Cnidaria is divided into five classes such as Hydrozoa, Cubozoa, Staurozoa, Scyphozoa and Enthozoa. |
Examples |
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6. | Example of Ctenophora is com jellies.
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Examples of Cnidaria are hydra, sea anemones, jellyfish and corals etc. |