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phylum annelida

phylum annelida
 

Grade:11

2 Answers

SHANMUKESHWAR
461 Points
8 years ago
The annelids, also known as the ringed worms or segmented worms, are a large phylum, with over 17,000 extant species including ragworms, earthworms, and leeches. WikipediaScientific name: AnnelidaHigher classification: LophotrochozoaRank: PhylumLower classifications: Polychaete, Clitellata
RAKESH CHINDAM
428 Points
8 years ago
Annelids' cuticles are made of collagen fibers, usually in layers that spiral in alternating directions so that the fibers cross each other. These are secreted by the one-cell deep epidermis (outermost skin layer).

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