Explain the evolution of mitochondria in protozoa.
In the process of evolution of protozoa the structure of mitochondria also evolved. The mitochondria were formed initially from endosymbiotic procaryotes -had discoid cristae. This was followed by the evolution of tubular cristae and finally flat plate like cristae evolved in protozoa. However, in some anaerobic protozoa they lost the mitochondria. The protozoa with flat platelike cristae further resulted in the evolution of fungi and animals.