alleryMetameric segmentation is best exemplified by
AAscaris
BTaenia
CPheretima
DAurelia
Answer & Solution
Correct answer: C. Pheretima
1. Metameric segmentation is defined as external + internal division of the body into segments with serial repetition of organs.
2. It is characteristic of phylum Annelida, of which Pheretima (earthworm) is a member.
3. Ascaris is Aschelminthes (roundworm), Taenia is Platyhelminthes (tapeworm), Aurelia is Coelenterate.
4. Taenia may appear segmented externally, but its "segments" are proglottids, not truly metameric.
_Source: syllabus Biology, Ch 4 "Animal Kingdom", §4.1.5 and §4.2.6_
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