The transmission of biological knowledge is a complex and therefore challenging task in both general education schools and extracurricular educational institutions. But what about the assessment of the learned material? What questions should be asked meaningfully? Where do you get these questions and, most importantly, the correct answers for evaluation? Quite simply: from the new series BioLogical Knowledge in Questions and Answers, which consists of four volumes! Based on a concept proven in practice, the organization is structured according to biological subject areas, independent of a rigid school and class division. The difficulty level is indicated by pictograms. This allows educators and learners to access the entire material as needed and to consider different objectives. The total of 899 questions are clearly understandable.