Biology - Digestion and Absorption Question with Solution | TestHub

Saliva is secreted by the salivary glands and contains water, electrolytes like sodium, potassium, chloride, and bicarbonates, along with enzymes such as salivary amylase and lysozyme.

Rennin is a proteolytic enzyme found in the gastric juice of infants, which helps in the digestion of milk proteins. It is not a constituent of saliva.

Answer: rennin