The seven taxa, or units of biological classification, from largest to smallest, are kingdom, phylum, class, order, family, genus and species. The second taxon is called phylum for animals, but for plants, it is called a division.Know More
The wolf, for example, is of the kingdom animalia, the philum chordata, the class mammalia, the order carnivora, the family canidae, the genus canis and the species canis lupus. The domestic dog has exactly the same taxa as the wolf except the species, which is canis familiaris. A house cat has the same top four taxa as wolves and dogs, but the last three are the family felidae, the genus felis and the species felis catus. When organisms are given scientific names, only genus and species are used. For example, the wolf is referred to as canis lupus, the dog as canis familiaris, the house cat as felis catus and humans as homo sapiens.
The seven broad major categories of taxa can be broken down into further intermediate categories, such as subphylum, subclass, suborder, subfamily, subgenus and subspecies. Taxonomists, or biologists who specialize in taxonomy, are particularly important in the fields of biodiversity and conservation. Taxonomy enables the classification of species in specific locations, giving precision to decisions concerning conservation.Learn More
The seven signs of life are moving, respiration, sensitivity, growth, reproduction, excretion and nutrition. All of these activities are present in living organisms. A non-living object sometimes manifests one or more of these activities but not all of them.Full Answer >
The seven classifications of science are kingdom, phylum, class, order, family, genus and species. These classifications are nested; for instance, organisms must be in the same kingdom to be in the same phylum.Full Answer >
The arctic fox's color changes in order to adapt to its environment. During winter, the fox's pelts are white in order to blend inconspicuously with the snow while during the summer their pelts change to a gray or brown. This is in order to blend in with the ground, as there is no snow in the arctic throughout the summer.Full Answer >
It is thought that bacteria developed the ability to produce restriction enzymes naturally in order to protect the cell from an invading virus. A virus reproduces by hijacking the DNA synthesis of its host to manufacture its own DNA. Restriction enzymes cleave the foreign DNA so that the virus cannot replicate.Full Answer >