Animal Classification: Fundamental Body Features — NEET Biology
📚 Practice ConceptInspite of differences in structure and form of different animals, there are fundamental features common to various individuals in relation to the arrangement of cells, body symmetry, nature of coelom, patterns of digestive, circulatory or reproductive systems. These features are used as the basis of animal classification and some of them are discussed here.
Which of the following statements correctly describes the fundamental features of animal classification? S1. In diploblastic animals, an undifferentiated layer called mesoglea is present between the ectoderm and endoderm, as seen in Coelenterates. S2. Platyhelminthes exhibit organ level of organization, bilateral symmetry, and are acoelomate, lacking any body cavity. S3. Aschelminthes are pseudocoelomates with a complete digestive system and organ-system level of organization. S4. All coelomates, such as Annelids and Molluscs, possess a body cavity lined by mesoderm and invariably exhibit metameric segmentation. S5. Notochord is a mesodermally derived, rod-like structure present in all Chordates throughout their embryonic development, and in some, persists throughout life.
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.