A Level Biology Practice Exam

In what forms are eukaryotes typically found?

1. Only unicellular

2. Exclusively multicellular

3. Multicellular and unicellular

4. Only in complex tissues

The correct answer is: Multicellular and unicellular

Eukaryotes are typically found in both unicellular and multicellular forms, making the most inclusive answer the correct one. This categorization reflects the wide diversity of eukaryotic organisms. For example, unicellular eukaryotes include protists such as amoebae and paramecia, which live independent lives as single-celled organisms. On the other hand, multicellular eukaryotes encompass a vast array of life forms, including plants, animals, and fungi, all of which are composed of many cells organized into complex structures and systems. This adaptability allows eukaryotes to occupy various ecological niches, as both unicellular and multicellular forms can thrive in different environments and under varying conditions. The presence of eukaryotes in both forms illustrates their evolutionary success and versatility across ecosystems.