The basal layer of stratified squamous epithelium is the cuboid layer which forms the other layer . so called as germinativum layer.

Germinative layer of Keratinized stratified squamous Epithelium:

The correct answer is option 'A', which is cuboidal. Let's understand why.

Keratinized stratified squamous epithelium:
Keratinized stratified squamous epithelium is a type of epithelial tissue that is found in the skin, particularly on areas of the body that are subjected to mechanical stress, such as the palms and soles. This type of epithelium is composed of multiple layers of cells, with the outermost layer being composed of dead, flattened cells that contain the protein keratin. The underlying layers of cells are living and actively divide to replace the dead cells on the surface.

Germinative layer:
The germinative layer, also known as the stratum basale, is the deepest layer of cells in the keratinized stratified squamous epithelium. This layer is named so because it is the site of cell division, where new cells are continuously produced to replace the old, dead cells that slough off from the surface. These new cells are cuboidal in shape.

Explanation:
The germinative layer of keratinized stratified squamous epithelium is composed of cuboidal cells. These cells are actively dividing and producing new cells, which then migrate towards the surface of the epithelium. As these cells move towards the surface, they undergo changes in shape and composition, eventually flattening and becoming filled with keratin. This process is known as keratinization. By the time the cells reach the surface, they are dead and fully keratinized, forming a protective layer that helps to prevent water loss and protect against mechanical stress.

In summary, the germinative layer of keratinized stratified squamous epithelium is composed of cuboidal cells. These cells are responsible for the continuous production of new cells, which then undergo keratinization and form the outermost protective layer of the epithelium.