I think it is the similarities and differences but I could be wrong.
He used their form and structure. Each category represent a level of grouping.
he used animal
homologous traits
homologous traits
homologous traits
Aristotle studied animals and classified them according to method of reproduction, as did Linnaeus later with plants. Aristotle's animal classification was soon made obsolete by additional knowledge and was forgotten.
traits that all organisms have
hi
The traits of an organism are controlled by genes and environment. Genes
homologous traits
homologous traits
Taxonomy
Whittaker's systematics includes ecological factors in addition to morphological characteristics, whereas Linnaeus's system is primarily based on physical similarities. Whittaker's system also accounts for genetic relationships between species, while Linnaeus's system focuses on classifying organisms based on shared physical traits.
Aristotle studied animals and classified them according to method of reproduction, as did Linnaeus later with plants. Aristotle's animal classification was soon made obsolete by additional knowledge and was forgotten.
traits that all organisms have
purposely mating organisms with desired traits
This is the process of evolution. Organisms develop different traits based on adaptations they need to make for survival. Consider that giraffes developed long necks to reach food from high trees.
The category that most similiar organisms belong to is genus.
Genes are what determine an organisms physical traits.
Taxonomy is the system of classifying organisms into groups based on common traits. Also used is the system of biological nomenclature, though taxonomy is the favored classification by most scientists.
Linnaeus also had plants and animals separated. But Linnaeus looked for similar traits to put animals and plants in families.