Question
Biology Question on excretory products and their elimination
First step in urine formation is
A
Tubular secretion
B
Tubular reabsorption
C
Selective secretion
D
Ultrafiltration
Answer
Ultrafiltration
Explanation
Solution
Filtration is a non-selective process. The first step in urine formation is the filtration of blood, which is carried out by the glomerulus and is called glomerular filtration