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vova2212 [387]
3 years ago
12

3. In the Phylum Porifera, the highest level of organization is arguably only at the cellular' levél. How

Biology
1 answer:
SIZIF [17.4K]3 years ago
8 0

Cnidarians have become more complex in terms of organisation than the poriferan as they have developed a tissue level organisation,they show locomotion , exhibit polymorphism  and a radial symmetry.

This means that cnidarians evolved later than poriferans and are adapted to more competitive and complex environment.

Explanation:

  • Poriferans are pore bearing animals , they have cell specialization but no tissue level organisation while cnidarians are diploblastic and exhibit tissue level organisation.
  • Poriferans are asymmetrical organisms hence are primitive to the radially symmetrical cnidarians.
  • poriferans obtain nutrition mostly through filter feed while cnidarians have a gastro vascular cavity for digestion.
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