The word "annelida" is of greek origin; "annellus" means:
Correct answer: A. Little ring
- A. Little ring
- B. Segmented body
- C. Thread
- D. Hollow
Explanation
Annelid, phylum name Annelida, also called a segmented worm, is a member of a phylum of invertebrate animals that are characterised by the possession of a body cavity (or coelom), movable bristles (or setae), and a body divided into segments by transverse rings, or annulations, from which they take their name. The name of the phylum is derived from the Latin word annellus, which means a little ring.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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