Question

1. what is unique about protozoa that is different from previous organisms?

protozoa must get their energy from other sources.

protozoa must migrate to warmer areas.

protozoa must have light for photosynthesis.

Explanation:

Previous early organisms like cyanobacteria (photosynthetic) or some bacteria could produce their own energy. Protozoa are heterotrophic eukaryotes that rely on consuming other organisms/sources for energy, which distinguishes them from these earlier autotrophic or self-sustaining life forms. Migration and photosynthesis are not unique traits of protozoa.

Answer:

Protozoa must get their energy from other sources.