1 Biology resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevel IGCSE SubjectClear filter Biology Exam board CIE TopicClear filter Characteristics of living organisms concept and use of a classification system dichotomous keys features of organisms Resources Crossword Flashcards Multi-tool Quizsearch Characteristics and classification of living organisms IGCSE, Biology 22 flashcards Search again