alleryWhich pair contains only echinoderms?
AAsterias and Echinus
BPila and Sepia
CBalanoglossus and Saccoglossus
DAscidia and Doliolum
Answer & Solution
Correct answer: A. Asterias and Echinus
Asterias (starfish) and Echinus (sea urchin) are echinoderms. They are triploblastic coelomates; NCERT notes the absence of an excretory system.
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