Final answer:
Holocrine glands undergo more frequent mitosis compared to merocrine glands, because holocrine glands lose cells during secretion and need constant replacement through mitosis.
Step-by-step explanation:
The mitosis rate between merocrine and holocrine glands differs due to their respective mechanisms of secretion. Merocrine glands release their secretions by exocytosis without the cell being harmed or altered, allowing the gland cells to continue living and dividing. In contrast, holocrine glands release their secretions through the rupture and destruction of the entire gland cell, resulting in the cell becoming part of the secretion. Because of this, holocrine glands need to undergo frequent mitosis to replace cells that are lost during secretion. Therefore, the correct answer is: B) Holocrine glands undergo more frequent mitosis.