Question

Hormone responsible for the development of moustache and beard in man is

• A. Sex corticoid
• B. Testosterone
• C. Thyroxine
• D. Thymosin

Answer 1

The correct option is B Testosterone

• The secondary sexual characters refer to sex specific characters of males and female.
• Male secondary sexual characters include stimulated synthesis of structural proteins of skeletal muscles and bones, voice deepening, growth of facial (moustache and beard), axillary and pubic hairs etc.
• Testosterone is secreted by interstitial cells or interstitial cells of testis and handles the development of male secondary sexual characters at puberty.
• Sex corticoids are the sex hormones produced by the adrenal gland. Since these hormones are not under regulation of gonadotropins, they do not regulate the secondary sexual characters but controls growth and development of sex organs.
• Thyroxine is a thyroid hormone that targets all tissues and stimulates metabolic rate, growth, and development.
• The thymus gland secretes thymosin, which is a peptide hormone and it stimulates the development of disease-fighting T cells.

Therefore, the correct answer is option B.