Q3. A Leaf shaped gland is present above the intestine. The sceretion of this gland regulates the metabolism of sugar in blood.

(a) Name this gland and its secretions.

(b) Is a mixed gland? Give reason for your answer.

The gland is pancreas. Pancreatic duct carries pancreatic juice secreted by pancreas to intestine for digestion of food. Pancreatic juice contains various digestive enzymes like amylase (carbohydrate digestion), lipase (fat digestion), trypsin, nuclease etc. 

Action of pancreatic juice results in:

Pancreas is called a mixed gland because it has both endocrine and exocrine functions.

Exocrine role: It secretes a digestive fluid called pancreatic juice, which is released inside the small intestine through pancreatic duct. This fluid consists of various digestive enzymes like trypsin, lipase, amylase, nucleases, etc.

Endocrine role: It produces two hormones, insulin and glucagon, which are released into the blood. Both these hormones are required for glucose metabolism.