QCAA ATAR BIOLOGY UNIT 3 Questions and answers, VERIFIED// 2024/25 exam prediction paper, RATED A+

QCAA ATAR BIOLOGY UNIT 3 Questions and answers, VERIFIED/ Ecosystems - -a biological community of interacting organisms and their physical environments Limiting factor - -any biotic or abiotic factor that restricts the existence of organisms in a specific environment. examples include: the amount of water, amount of food, temperature, amount of space and availability of mates Hierarchical classification - -Arranging things into groups according to their similarities from larger general groups to specific detailed groups The three feeding relationships - -1. producer - consumer 2. predator - prey 3. parasite - host the hierarchy of ecology - -biosphere ecosystem community population organism Levels of biological Classification - -physical features methods of reproduction molecular sequences Assumptions that underpin cladistics - -1. Any group of organisms are related by descent from a common ancestor 2. New kinds of organisms may arise when existing populations diverge into two groups 3. Change in characteristics occurs in descendants over time The Linnaean biological classification - -The classification of plants is based on reproductive structures whereas the classification of animals in based on similar physical features that can be readily seen. Each categorgy is called a taxon. Taxonomy - -The science of classifying organisms taxonomic classification order - -Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species Genus - -closely related species arising from a common ancestor Specific name - -the descriptive name of a species Species - -a group of similar organisms w