Q. In the human digestive system, which among the following organs secrete digestive enzymes?

1. Mouth
2. Stomach
3. Gall bladder
4. Small intestine

Select the correct option from the codes given below:
Answer: Only 1, 2 & 4
Notes: The mouth secretes digestive enzyme salivary amylase; the stomach secretes enzymes like pepsin; and the small intestine releases enzymes such as peptidases and maltase. The gall bladder, however, does not secrete enzymes but stores and releases bile produced by the liver, which aids in fat emulsification but is not an enzyme.