Date & Time : 19, October 2017 03:48
Common Name:- Rag worm or clamworm.
Distribution:- cosmopolitan distribution.
Habit and Habitat:- found in marine, crawling type.
- It is the simplest annelid.
- Body:- cylindrical and elongated.
- Metamerism:- body consists of about 200 segments or metameres.
- Head:- initial segments fused to form head consisting of eyes and peristomium.
- Peristomium:- it consists of peristomial tentacles (four pairs) and mouth on the anterior surface.
- Parapodia:- locomotory organs which are found on each segment of the body (exception- 1st and last segment). Each parapodium consists of notopodium , neuropodium and needle like setae (for crawling purpose).
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