Which organ of sharks prepares insulin?

Correct option is C

Correct Answer: (c) Pancreas
Explanation:
→ In sharks, insulin is synthesized and secreted by the pancreas.
→ The pancreas contains endocrine cells (Islets of Langerhans) responsible for insulin production.
→ Insulin regulates glucose metabolism in all vertebrates including fishes.
Information Booster:
→ Sharks also possess a unique structure called the spiral valve intestine but not involved in hormone secretion.
Additional Information (Other Options):
(a) Gall bladder: Stores bile only.
(b) Liver: Produces glycogen, not insulin.
(d) Intestine: Absorption organ, not endocrine.