Final answer:
The correct statement about multicellular exocrine glands is that holocrine glands release their product by the rupture of secretory cells. Unlike merocrine glands, which use exocytosis, or apocrine glands, which pinch off part of the cell, holocrine glands involve the secretion becoming part of the product itself.
Step-by-step explanation:
The correct statement regarding multicellular exocrine glands is: The secretory cells of holocrine glands release their product by rupturing. Holocrine glands store their secretions until the cells rupture, which releases the contents and results in the secretion itself becoming part of the product. This is unlike merocrine glands, which release their secretions through exocytosis without any loss of cell material, and apocrine glands, which release secretions by pinching off the apical portion of the cell.
It is also important to note that exocrine glands do indeed have ducts through which they release their secretions onto the epithelial surface. These glands, such as salivary glands and glands of respiratory passages, can have complex structures including compound ducts and can be arranged in tubular, alveolar, or tubuloalveolar formations.