Answer: Defense and capturing of prey via stinging cells.
- A Digestion of food in the gastrovascular cavity
- B Excretion of nitrogenous wastes
- C Defense and capturing of prey via stinging cells
- D Locomotion by water expulsion
Correct answer: C. Defense and capturing of prey via stinging cells
Explanation: Cnidoblasts (cnidocytes) are specialized stinging cells present on the tentacles of cnidarians, used for anchorage, defense, and capturing prey.
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.