Trochophora
Size
- Up to 0.5 mm.
Description
- Typical larva of polychaetous annelids.
Distinguishing characteristics
- Ciliary band called the prototroch.
- Circumferential band of cilia called the metatroch (posteriorly borders mouth region).
- Ciliated region between the two bands is called the food groove.
Distribution
- Temperate.
Ecology
- Prototroch is used for locomotion and feeding.