Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human beings?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Adrenaline
Hormones are chemical messengers released by endocrine glands into the blood. Adrenaline (epinephrine), made by the adrenal medulla, is the “fight or flight” hormone: it is released under stress and raises the blood glucose level by stimulating glycogenolysis, the breakdown of glycogen to glucose in the liver, so that the muscles get extra fuel quickly. Adrenaline is the same hormone as the epinephrine named in the book.
Why the other options are incorrect
Option (1) Thyroxin — Incorrect. An iodinated hormone of the thyroid gland that controls the metabolic rate of the body; it is not the stress hormone.
Option (2) Estradiol — Incorrect. A steroid female sex hormone of the ovaries, responsible for secondary sexual characters and the menstrual cycle.
Option (4) Insulin — Incorrect. A peptide hormone of the pancreas that lowers blood glucose by helping its uptake and its storage as glycogen, the opposite of glycogenolysis.
NCERT (2026-27 edition):
Hormones – …
