NEET2026BiologyChapterActual
Match List I with List II. List I List II A Melatonin 1 Cell-mediated immunity B Aldosterone 2 Hypercalcemic hormone C Parathyroid hormone 3 Diurnal rhythm of body D Thymosin 4 Salt-water balance Choose the correct answer from the options given below:
Options
- AA-3, B-4, C-2, D-1
- BA-3, B-2, C-4, D-1
- CA-4, B-3, C-1, D-2
- DA-2, B-4, C-3, D-1
Correct answer
A. A-3, B-4, C-2, D-1
Step-by-step solution
Melatonin is secreted by the pineal gland and regulates the 24-hour diurnal rhythm of the body. Aldosterone is a mineralocorticoid that acts mainly at the renal tubules and stimulates the reabsorption of Na^+ and water, thus maintaining salt-water balance. Parathyroid hormone increases the Ca²⁺ levels in the blood, acting as a hypercalcemic hormone. Thymosins play a major role in the differentiation of T-lymphocytes, which provide cell-mediated immunity. Thus, the correct matching is A-3, B-4, C-2, D-1. Answer: A-3