Trochopore larva is associated with the class ............ of Annelida.
A
Polychaeta and Oligochaeta
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B
Polychaeta only
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C
Polychaeta and Archiannelida
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D
Hirudinea and Archiannelida
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Solution
The correct option is C Polychaeta and Archiannelida Trocophore larva are small and free-swimming larva. This is a characteristic of marine annelids. This type of larvae is also common in Molluscs. Trochophore larvae are of either spherical or pear-shaped. They are girdled by a ring of cilia which is known as the prototroch. The movement of the cilia enables them to swim. It is associated with Polychaeta and Hirudinea classes of Annelid.