Question

1. what characteristic do all protozoa display?

○ vertebrate
○ eukaryotic
○ autotrophic
○ immobile

Explanation:

1. Analyze "vertebrate": Protozoa are single - celled organisms and do not have a vertebral column, so they are not vertebrates.
2. Analyze "eukaryotic": Protozoa are a group of single - celled eukaryotes. Their cells have a true nucleus and other membrane - bound organelles, so all protozoa are eukaryotic.
3. Analyze "autotrophic": Most protozoa are heterotrophic, meaning they obtain food from other organisms, and not all protozoa are autotrophic.
4. Analyze "immobile": Many protozoa are capable of movement, for example, paramecia use cilia to move and amoebas use pseudopodia to move. So they are not immobile.

Answer:

B. eukaryotic