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) were autotrophic, producing their own energy. Protozoa are heterotrophic, relying on other sources for energy, which distinguishes them. Migration and photosynthesis needs are not unique traits of protozoa.

Answer:

Protozoa must get their energy from other sources.