Correct Answer:
B. Ptyalin
The human digestive process begins in the mouth, where salivary glands produce saliva containing enzymes crucial for initial food breakdown. The correct enzyme produced by salivary glands is Ptyalin, also known as salivary amylase. This enzyme is responsible for initiating the digestion of complex carbohydrates (starches) into simpler sugars.
- Pepsin is an enzyme produced in the stomach, where it plays a vital role in protein digestion.
- Trypsin is produced by the pancreas and functions in the small intestine to further break down proteins.
- Therefore, 'None' is incorrect as Ptyalin is indeed produced by salivary glands.