<prompt> The mode of secretion of sebaceous gland isMerocrineHolocrineApocrineEccrine  <response>: Sebaceous Glands Sebaceous glands, producing an oily secretion, are widely distributed all over the dermis of the skin, except for the palms and soles.Sebaceous glands are holocrine in nature, i.e. they produce their secretion by complete fatty degeneration of the central cells of the alveolus, which are then replaced by the proliferating peripheral cells. The secretion is under hormonal control, especially the androgens. The oily secretion of sebaceous glands is called sebum.Reference: BD Chaurasias Handbook of GENERAL ANATOMY Fourth Edition page no 180 