Bilirubin and biliverdin are present in . . . . . . .

Which of the following salivary glands is the largest?

Given below are two statements:
$Statement-I$: Parotid salivary glands are present below the tongue.
$Statement-II$: Sublingual salivary glands are present in front of each ear.
In the light of above statements, choose the most appropriate answer from the options given below:

$A$: In humans,the duct of Wirsung from the pancreas combines with the bile duct before opening into the duodenum.
$R$: Blockage in the duct of Wirsung will prevent the endocrine function of the pancreas.

The enzyme $Rennin$ is secreted by:

The blood-forming factor of Castle is found in: