Question

Mammary glands are modified
A. Cutaneous glands
B. Sebaceous glands
C. Sweat glands
D. Scent glands

Answer 1

Hint:Presence of mammary glands is the peculiar character of mammals. In mammals, mammary glands are well developed in females and underdeveloped in males. Female gives nutrition to the newborn baby through the mammary glands.

Complete answer:
Sweat glands and Sebaceous glands are a type of simple glands. Sweat glands are simple coiled tubular glands in which the terminal part is coiled. While sebaceous glands are branched alveolar glands.
In prototherian mammals, mammary glands are compound tubular and in Eutherian mammals, mammary glands are compound tubular alveolar or tubule saccular. Such glands are tubular as well as alveolar type.
The structurally mammary gland consists of lobes and these lobes are called mammary lobes. These lobes are surrounded by adipose tissue. The hormone estrogen is responsible for the deposition of fat around the mammary lobe.

Inside mammary lobes, mammary alveoli are present. The function of mammary alveoli is the synthesis of milk. Prolactin hormone promotes milk synthesis and the development of mammary alveoli is under the influence of progesterone hormone. These alveoli are connected with mammary ducts and these ducts open into a broader part i.e. mammary ampulla. The mammary ampulla is a site where temporary storage of milk occurs.
Mammary ampulla connected with the nipple by the lactiferous ducts. Oxytocin is a milk releasing hormone released by the posterior pituitary.
By considering the above structure of the mammary gland it is a modified tubular gland.
Hence the answer to the given question is option C) Sweat glands

Note: Based on secretion mammary glands are apocrine glands. In such a type of gland apical portion of the cell is degenerated along with the secretions from the cell. That degenerated part can regenerate again.