Answer:
Endocrine gland: It secretes its products (example hormones) directly into the blood.
Exocrine gland: It secretes its products into ducts that lead to the target tissue.
Explanation:
1. Endocrine glands are those glands which secretes its products (example hormones) directly into the blood.
Example: The adrenal gland: secretes adenaline directly into the blood.
2. Exocrine gland are those glands which secretes its products (example enzymes) into ducts that finally lead to the target tissue.
Example: As salivary gland secretes saliva enzyme into the collecting duct.
Note: Pancreas gland performs both endocrine as well as exocrine functions.