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प्रश्न
How do poriferan animals differ from coelenterate animals?
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उत्तर
| Porifera | Coelenterate | |
| 1. | They are mostly marine, non-motile, and found attached to rocks. | They are exclusively marine animals that either live in colonies or have a solitary life-span. |
| 2. | They show cellular level of organisation. | They show tissue level of organisation. |
| 3. | Spongilla, Euplectella, etc. are poriferans. | Hydra, sea anemone, corals, etc. are coelenterates. |
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