Question

Give one example each class of Annelida.

Answer 1

The three classes and an example of each are:

1. Polychaeta: Nereis; parapodia bearing numerous setae aid locomotion.
2. Oligochaeta: Pheretima (earthworm); parapodia are absent and setae are present.
3. Hirudinea: Hirudinaria (Indian cattle leech); anterior and posterior suckers are present, while setae and parapodia are absent.