Step 1: Understand digestive glands.
Digestive glands secrete substances that help in digestion such as enzymes, bile, and acids.
Step 2: Analyze pancreas.
Pancreas secretes digestive enzymes like amylase, lipase, and trypsin.
Step 3: Analyze stomach.
Stomach secretes pepsin, rennin, and gastric lipase, which are digestive enzymes.
Step 4: Analyze intestine.
Intestinal glands also secrete enzymes such as peptidases and disaccharidases.
Step 5: Analyze liver.
Liver does NOT secrete digestive enzymes; it produces bile which helps in fat emulsification.
Step 6: Conclusion.
Therefore, liver is the digestive gland that does not produce enzymes.