Question

Which of the following leads to dwarfism?

• A. Excessive secretion of growth hormone
• B. Deficiency of growth hormone
• C. Deficiency of thyroxine
• D. Excessive secretion of insulin

Answer 1

The correct option is B Deficiency of growth hormone

Dwarfism occurs when an individual person or animal is short in stature resulting from a medical condition caused by slow growth. In humans, dwarfism is sometimes defined as an adult height of less than 4 feet 10 inches (58 in; 147 cm).
Extreme shortness in humans with proportional body parts usually has a hormonal cause, such as growth-hormone deficiency, once called pituitary dwarfism.
Growth hormone is secreted by pituitary gland. Growth hormone (GH or HGH), also known as somatotropin or somatropin, is a peptide hormone that stimulates growth, cell reproduction and regeneration in humans and other animals. In the shortage or absence of growth hormone dwarfism is developed.
Excess of growth hormone causes gigantism and at the same time lack of thyroxine causes goitre.

Therefore, the correct answer is option B.