Vasopressin (antidiuretic hormone) from the neurohypophysis prevents diuresis (increased urine production) by increasing water reabsorption in the kidneys.
Column I | Column II | ||
a | 6- 15 pairs of gill slits | i | Trygon |
b | Heterocercal caudal fin | ii | Cyclostomes |
c | Air Bladder | iii | Chondrichthyes |
d | Poison sting | iv | Osteichthyes |
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :