Answer:
c. Endocrine glands do not use ducts
Explanation:
Exocrine and endocrine glands differ from each other with respect to the presence of ducts.
Endocrine glands are the ductless glands and release their secretions directly into the bloodstream. These glands release hormones that are carried to the target cells/tissues along with the blood. Example: Adrenal gland.
On the other hand, exocrine glands release their secretions via ducts. These glands secrete digestive juices, mucus, sweat, etc. Example: Sweat gland
