Flashcards
ENV118L - Experiment 3 Quiz
Flashcards do conjunto (12)
- 1objective of experiment 3: taxonomy and nomenclature- to allow students to understand how species are named and classified
- use species identification as a measure of biodiversity - 2taxonomythe science of naming and classifying living organisms into groups, or taxa (singular=taxon), bases on similarities or differences.
- 3thoraxpart of the body between the neck and the abdomen
- 4isopodcrustacean of the order isopoda, such as a wood louse
- 5arachnidarthropod of the class arachnida, such as a spider or scorpion
- 6taxona taxonomic group, such as family, genus or species
- 73 approaches to classifying organismsclassical, phenetics, cladistic
- 8the classical approach- focuses on the relative importance of characteristics (eg. wing structure being most important factor in classifying 3 different organisms)
- 9the phenetics approach- uses quantitative methods, and only considers the observable characteristics of modern (ie. living) organisms
- a set of characteristics are analyzed and assigned a numerical value that is then used to determine the extent of similarity between organisms - 10the cladistic approach- classifies organisms using natural evolutionary relationships (i.e., phylogenetic relationships)
- the taxonomist uses the fossil record, molecular genetics and other techniques to create what is called a cladogram or phylogenetic tree - 117 steps of classificationkingdom
phylum
class
order
family
genus
species - 12human classificationkingdom: animalia
phylum: chordata
class: mammalia
order: primates
family: hominidae
genus: homo
species: sapiens