Q: Which one of the following organisms does not possess notochord at any stage of its life cycle?
(a)Holothuria
(b)Herdmania
(c)Exocoetus
(d)Salamander
Correct Answer: (a)
The correct answer is (c): Exocoetus. Subject: General Studies | Sub-topic: Miscellaneous Note: This answer was determined through AI-based research. Verify against the official answer key when available.