Essential Idea:  Species are named and classified using an internationally agreed system.

• Outline answer to each objective statement for topic 5.3 (coming soon)
• Quizlet study set for this topic

At SHS, Topic 5.3 is taught in the following class unit(s):​​​​​

• Classification of Biodiversity
• Cladistics

5.3.U1  The binomial system of names for species is universal among biologists and has been agreed and developed at a series of congresses.

• ​Outline the role of botanical and zoological congresses in the naming of plants and animals.

5.3.U2  When species are discovered they are given scientific names using the binomial system.

• Define binomial nomenclature.
• State three rules of binomial nomenclature formatting. ​

5.3.U3  Taxonomists classify species using a hierarchy of taxa.​

• Define taxon and taxonomist.
• List the hierarchy of taxa, from largest to smallest.

5.3.U4  All organisms are classified into three domains.

• State the two groups of prokaryotes.
• List the three domains of life.
• Outline differences between the three domains of life.
• Draw a tree diagram to illustrate the evolutionary relationship between organisms of the three domains.

5.3.U5  The principal taxa for classifying eukaryotes are kingdom, phylum, class, order, family and genus and species.

• List the four kingdoms of eukaryotes.
• List the hierarchy of taxa, from largest to smallest​.

5.3.U6  In a natural classification, the genus and accompanying higher taxa consist of all the species that have evolved from one common ancestral species.

• ​Define natural classification.
• List two difficulties in determining the natural classification of species.

5.3.U7  Taxonomists sometimes reclassify groups of species when new evidence shows that a previous taxon contains species that have evolved from different ancestral species.

• List two situations in which the reclassification of a species may be necessary.  
• Outline an example of a species (or group of species) which were reclassified when new evidence was discovered. ​

5.3.U8  Natural classification helps in identification of species and allows the prediction of characteristics shared by species within a group.

• Explain two specific advantages of natural classification.

5.3.A1  Classification of one plant and one animal species from domain to species level.

• ​State the classification of a plant, from domain to species.
• State the classification of an animal, from domain to species.

5.3.A2  Recognition features of bryophyte, filicinophyta, coniferophyta, and angiospermophyta.

• State the four major plant phyla.
• Outline the differences between the four major plant phyla in regard to external recognition features.
• Identify the phyla of plant given external recognition features.

5.3.A3  Recognition features of porifera, cnidarian pletyhelmintha, annelida, Mollusca, arthropda and chordata.

• State seven major animal phyla.
• Outline the characteristics of seven major animal phyla.
• Identify the phyla of animal given external recognition features.

5.3.A4  Recognition of features of birds, mammals, amphibians, reptiles and fish.​

• Contrast chordate and vertebrate.
• State five major classes of chordata.  
• Outline the characteristics of five major vertebrate classes.
• Identify the vertebrate class of animal given external recognition features.

5.3.S1  Construction of dichotomous keys for use in identifying specimens.

• Explain the use of a dichotomous key in the identification of a specimen.
• Create a dichotomous key given a sample of known specimens. ​

5.3.NOS  Cooperation and collaboration between groups of scientists- scientists use the binomial system to identify a species rather than the many different local names.

• ​​Outline why the binomial naming system is used in science rather than local names.
• State the role of Carl Linnaeus in naming species.