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Exclusively marine animals which are triploblastic, deuterostomes and exhibit radial symmetry in the adult stage and bilateral symmetry in the larval stages are placed under
Exclusively marine animals which are triploblastic, deuterostomes and exhibit radial symmetry in the adult stage and bilateral symmetry in the larval stages are placed under
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Solution
The correct option is D Echinodermata
Phylum Echinodermata includes exclusively marine animals such as sea stars, sea urchins etc., which are triploblastic and deuterostomes (which means that during embryonic development, the blastopore becomes the mouth). They are known to exhibit bilateral symmetry during their larval stages, and attain radial symmetry by adulthood. Annelids, Arthropods and Molluscs are typically bilaterally symmetrical, though some fully grown molluscs may become asymmetrical as they approach full growth.
Echinodermata
Phylum Echinodermata includes exclusively marine animals such as sea stars, sea urchins etc., which are triploblastic and deuterostomes (which means that during embryonic development, the blastopore becomes the mouth). They are known to exhibit bilateral symmetry during their larval stages, and attain radial symmetry by adulthood. Annelids, Arthropods and Molluscs are typically bilaterally symmetrical, though some fully grown molluscs may become asymmetrical as they approach full growth.
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