For semester exam preparation, consider this situation: a hydra captures prey using specialized stinging cells on its tentacles. The correct conclusion is:

Correct Answer: D

cnidocytes

Cnidocytes are stinging cells unique to cnidarians. They contain nematocysts that discharge to capture prey, defend the animal, or attach to surfaces. This MCQ belongs to the Cnidaria topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.