| A | B |
|---|
| biologist | a scientist who studies the behavior and characteristics of living things |
| classification | the grouping of organisms by their type |
| kingdom | one of the five main groups in biological classification |
| phylum | the largest of the groupings of organisms below kingdom |
| species | organisms that can reproduce together and have offspring that can also reproduce |
| protist | a tiny one-celled organism that is neither plant nor animal but may have characteristics of both |
| alga | a plantlike protist |
| protozoan | an animal-like protist |
| protozoan | an animal-like protist |
| moneran | a tiny organism that has DNA but no true nucleus |
| bacterium | a tiny one-celled moneran seen only through a microscope |
| fungus | an organism that gets its food by breaking down dead matter and absorbing useful elements from it |
