Question
Biology Question on Animal Tissues
Stratum germinatoum is an example of which kind of epithelium?
A
columnar
B
squamous
C
cuboidal
D
ciliated.
Answer
columnar
Explanation
Solution
Stratum germinativum (also stratum basale or basal cell layer) is the layer of keratinocytes that lies at the base of the epidermis immediately above the dermis. It consists of a single layer of tall, simple columnar epithelial cells lying on a basement membrane. These cells undergo rapid cell division, mitosis to replenish the regular loss of skin by shedding from the surface. About 25% of the cells are melanocytes, which produce melanin which provides pigmentation for skin and hair.