The question asks for the primary unit of classification in taxonomy. Taxonomy is the science of classifying organisms. Organisms are classified into a hierarchical system of ranks, from broad to specific. Understanding this hierarchy is key to identifying the most fundamental unit.
C) Species — Species is considered the primary and most fundamental unit of classification in taxonomy because it represents a group of organisms that share a common gene pool and can interbreed to produce fertile offspring. This biological concept of species forms the basis for further, broader classifications.
The question asks about the universal codes that govern the naming of organisms. This falls under the biological classification and nomenclature topic. We need to identify the correct acronyms for the international codes of nomenclature for plants and animals.
Correct Option: B) ICBN and ICZN
This question tests knowledge of binomial nomenclature, a formal system of naming species. The rules for writing scientific names, established by Carl Linnaeus, are crucial for correctly identifying the scientific name of a species.
Correct Option: C) Panthera leo is the correct scientific name for the lion, following all rules of binomial nomenclature: the genus name (Panthera) is capitalized, the species epithet (leo) is lowercase, and the entire name is italicized.
The question asks about the components of a binomial name, a system used for naming species. Binomial nomenclature, introduced by Carl Linnaeus, assigns a unique two-part scientific name to each species.
Correct Option: B) Specific epithet — The second word in a binomial name is the specific epithet, which, when combined with the genus name, forms the unique scientific name for a species.
The question asks to identify the phylum that includes animals like fishes, birds, and mammals. This requires knowledge of animal classification and the defining characteristics of major phyla.
C) Chordata. The phylum Chordata includes all vertebrates (fishes, amphibians, reptiles, birds, and mammals) as well as some invertebrates (tunicates and lancelets). They are characterized by the presence of a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail at some stage of their development.
The question asks to identify a feature common to all members of the phylum Chordata. To answer this, we need to recall the defining characteristics of Chordates.
Correct Option: C) Presence of notochord