Which cells engulf antigens by phagocytosis and present fragments of them on their own surfaces for recognition?

macrophages and dendritic cells.

Explanation:

Macrophages and dendritic cells are antigen-presenting cells. They perform a process called antigen presentation. In this process some phagocytes display the engulf parts of the cell to the surface of their cell. Dendritic cells is also known as accessory cells. Dendritic cells act as messengers between the innate and the adaptive immune systems. Macrophages refers to the white blood cells responsible for protection.

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )