Diploblastic Animals and Embryonic Layers — NEET Biology
📚 Practice ConceptAnimals in which the cells are arranged in two embryonic layers, an external ectoderm and an internal endoderm, are called diploblastic animals, e.g., coelenterates. An undifferentiated layer, mesoglea, is present in between the ectoderm and the endoderm.
Which of the following combinations is correct for the given organism?
View solution & NCERT explanation
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).
What does NCERT say about Animals which cells are?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 88 of 90 questions from the NEET 2026 paper were matched straight from the MedicNEET Biology question bank.
88/90MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.