The correct answer is: All are eukaryotic.
Protists are a diverse group of eukaryotic organisms that are not plants, animals, or fungi. They can be unicellular or multicellular, and they can be found in a variety of habitats, including water, soil, and even the human body.
Protists are eukaryotic, which means that their cells have a nucleus and other organelles. This distinguishes them from prokaryotes, which are single-celled organisms that do not have a nucleus.
Protists are a diverse group of organisms, and there is no single characteristic that all protists share. However, they all have some features in common, including:
- Eukaryotic cells
- A variety of shapes and sizes
- A variety of habitats
- A variety of lifestyles
Protists play an important role in the environment. They are a source of food for other organisms, and they help to recycle nutrients. Some protists are also harmful to humans, causing diseases such as malaria and sleeping sickness.
Here is a brief explanation of each option:
- All are unicellular. This is not true, as some protists are multicellular. For example, algae are protists that can form large colonies or even seaweed.
- All are heterotrophic. This is also not true, as some protists are autotrophic. Autotrophic protists are able to make their own food through photosynthesis, like plants.
- All are autotrophic. This is not true, as some protists are heterotrophic. Heterotrophic protists must consume other organisms to obtain energy.
- All are eukaryotic. This is the only option that is true. All protists are eukaryotic, which means that their cells have a nucleus and other organelles.