What theory was developed around the idea that some eukaryotic organelles evolved from prokaryotic organisms?

endosymbiotic theory

Explanation:

The endosymbiotic theory is the most likely explanation for the development of eukaryotic cells.

i have to report this, it doesn't relate to biology

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.