Which type of larva is found in Hemichordata?

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Question

(A) The phylum $Hemichordata$ is characterized by the presence of a specific larval stage known as the $Tornaria$ larva. This larva is free-swimming a

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Tornaria

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(A) The phylum $Hemichordata$ is characterized by the presence of a specific larval stage known as the $Tornaria$ larva. This larva is free-swimming and ciliated,showing significant similarities to the bipinnaria larva of echinoderms,which suggests an evolutionary link between the two groups. Other options like $Parenchymula$ and $Amphiblastula$ are associated with Porifera,while $Planula$ is characteristic of Cnidaria.

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