Answer:
b. Melanocytes-protect cells in the dermis from damaging effects of sun's rays
Step-by-step explanation:
Keratinocytes are responsible for the forming tight junctions with nerves of skin. They keep Langerhans cells of epidermis and lymphocytes of dermis in place.
(Option A is incorrect).
Melanocytes are the cells of the neural crest origin. In epidermis, they form association closely with the keratinocytes via dendrites. Melanocytes are responsible in skin pigmentation.
(Option B is correct).
Basal cells are undifferentiated and proliferating cells. For the normal skin homeostasis, the daughter cells from basal cell layer migrate upward and begin process of the differentiation.
(Option C is incorrect).
Merkel cells are located in basal epidermal layer of skin. Merkel cells are essential for the light touch sensation and are found in the skin of vertebrates.
(Option D is incorrect).