Question

Trochopore larva is associated with the class ............ of Annelida.

• A. Polychaeta and Oligochaeta
• B. Polychaeta only
• C. Polychaeta and Archiannelida
• D. Hirudinea and Archiannelida

Answer 1

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.

Thus, the correct answer is option B.