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Aplysia belongs to the group of animals characterised by 1) Pentamerous radial symmetry2) Body differentiated as head, thorax, abdomen3) Chitinous exoskeleton4) Calcareous shell Which one is the correct option,? |
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Answer» erms include well known ANIMALS, like starfish, sea urchin etc. The larvae of echinoderms have BILATERAL symmetry but this is lost during metamorphosis, when their bodies are REORGANIZED and develop the characteristic RADIAL symmetry of the echinoderm, TYPICALLY pentamerism. Hence, option C is correct. |
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