If you are given a specimen, what are the steps that you would follow to classify it?
Which of the following combinations is correct for the given organism?
Correct answer: D — Aurelia – Cnidaria – Diploblastic – Acoelomate – No segmentation
Option a: Incorrect → Sycon (Porifera) has cellular level organisation, no true germ layers, no coelom, no segmentation. Option b: Incorrect → Planaria (Platyhelminthes) is triploblastic but acoelomate and unsegmented. Option c: Incorrect → Earthworm (Annelida) is triploblastic, coelomate, segmented – not diploblastic or acoelomate. Option d: Correct → Aurelia (Cnidaria) is diploblastic, acoelomate, and unsegmented. Thus, the correct combination is (d).
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