Diplomonads and parabasalids are the two groups that are adapted to anaerobic conditions and contain modified mitochondria that lack DNA.
Answer: Option E
Step-by-step explanation:
Two groups of Protists are adapted to anaerobic conditions. They are adapted to live without Oxygen or even they die in the presence of free oxygen. They are two groups called the diplomonads and parabasalids.
They have modified mitochondrias that lack DNA. The diplomonads are the internal parasite that causes Beaver fever which is caused by contaminated water. The parabasalids are animal parasites.