In contrast to paramecium, euglena

Explanation

Both Euglena and Paramecium are single-celled, eukaryotic organisms, but they differ in how they move and obtain energy. Euglena is primarily an autotrophic organism because it contains chloroplasts for photosynthesis, although it can also absorb nutrients heterotrophically. It moves using a flagellum, which is a whip-like structure. In contrast, Paramecium is entirely heterotrophic, feeding on microorganisms. It moves using cilia, which are tiny hair-like structures surrounding its body. Paramecium also possesses two types of nuclei, a macronucleus and one or more micronuclei, which euglena does not have. Thus, the correct answer is that Euglena uses flagella for locomotion, unlike Paramecium.