Answer: Fishes.
- A Fishes
- B Reptiles
- C Adult birds
- D Land mammals
Correct answer: A. Fishes
Explanation: The lateral line is a row of sense organs along the body of fishes (and aquatic amphibians) that detects movement and pressure in water.
Moving across the animal phyla, body organisation becomes progressively more complex: from no symmetry and cellular organisation (Porifera) through radial/diploblastic (Cnidaria), bilateral/acoelomate (Platyhelminthes), pseudocoelomate (Nematoda), to a true coelom with full organ systems (Annelida and beyond).
Concept context
Phylum-level classification of the animal kingdom from Porifera to Chordata, based on body symmetry, coelom, and segmentation. One of the most example-heavy chapters for NEET.